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rw-infotech · 5 years ago

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List of Top JavaScript Frameworks 2020 For Front End Development

JavaScript is defining the future of the tech world with its wide genre of competent frameworks, which are capable of accelerating the development of applications in many ways. How to choose a certain framework in JavaScript is based on the company’s goals, project requirements and how certain frameworks can be used in different scenarios.

JavaScript, one of the most surreal and beautiful programming languages, enwrapped by the intriguing fact that even though it is named “Java” Script, it doesn’t have any association with Java. In mid-1995, when JavaScript came into existence it was disguised as the name Mocha and later it was named as “LiveScript” and when Netscape and Sun did a license agreement it was finally renamed to “JavaScript”. Nobody had even imagined in its initial form that it would be such a revolutionary programming language and would be entitled as one of the major languages to learn. The world is pacing fast with the ever-changing technology and programming languages being the pillar of technology. JavaScript is surely defining the future with its compelling and competent frameworks.

What are the Frameworks?

In general, a framework is a prototype or conceptual structure intended to serve as a support or guide for the building of something that expands the structure into something useful. According to Wikipedia ” A software framework is an abstraction in which software providing generic functionality can be selectively changed by additional user-written code, thus providing application-specific software.”

JavaScript web frameworks are cheat codes for quick web application development. They serve as a skeletal frame for single page application development and allows developers to worry less about code structure or maintenance and help them in focusing more on the creation of complex interface elements and expand opportunities of JS and plain HTML.

So, Which frameworks of JavaScript are most popular and why?

Below is the list of a few Javascript frameworks:

1. AngularJS- AngularJS is an open-source framework used in frontend and is maintained by Google. It is mainly used to subside and sort the problems encountered while creating single-page applications usually have, as it simplifies both development and testing of such application by providing a framework for client-side model view controller (MVC) and model view-view model (MVVM) architectures. For now, it is known to be the most used JavaScript framework for single-page applications and have the largest community of developers.

2. ReactJS- ReactJS camouflage itself to be JS framework but it is more of an open-source JS library, which has huge names like Facebook and Instagram behind it. React was built by a software engineer at Facebook. In 2011, it was first deployed on Facebook’s newsfeed and later on Instagram in 2012. React Js emerges in an ecosystem of complete frameworks, but it’s just the view. In MVC(Mobile-View-Controller) pattern, React.js acts as “V” and can be smoothly integrated with any architecture.

A fully functional dynamic application can’t be built with React alone. Recently, On April 18th 2017, Facebook announced a new core algorithm of React framework library for building user interface named React Fiber, which is said to be the foundation for future development and improvement of ReactJS.

3. Ember JS- A few years back, in 2015, EmberJs was considered to be the best framework leaving React and AngularJS behind. It does two-way data binding as same as AngularJS keeping both view and model in sync for all the time. Emberjs is commonly used for complex feature-rich web applications and website. LinkedIn, Netflix, Chipotle, Blue Apron, Nordstrom are one of the few of the top names that have incorporated EmberJS.

What works in its favour is that it is easy to learn and have many tutorials online which helps to learn it with ease.

4. Vue.Js- Vue.js is considered to be one of the best solutions for cross-platform development. The development of Vue.Js is considered by taking the best qualities from Angular, React and Ember such as Vue.js offers two-way data binding (same as in AngularJS), server-side rendering (like in Angular2 and ReactJS), Vue-CLI (backbone tool for quick start) and optional JSX support. and all the altering flaws in prior three.

5. MeteorJS- MeteorJS is a free and open-source framework, which is well-equipped with tons of features for back-end development, front-end rendering, DB(database) management and business logic. Being a full-stack platform, it has the quality that its name suggests which is being fast. If you’re looking to rapidly develop smaller, reactive applications on the Node.js platform, Meteor is definitely an excellent choice.

Due to its modular structure, all the packages and libraries can be used at a high pace. In terms of performance, all the changes in the database are transmitted to the UI in the shortest time possible and in conversely with no evident time losses caused by different languages or server response time.

The consideration of a JavaScript framework is based on the company’s goals, project requirements and how certain frameworks can be used in certain scenarios. JavaScript is portraying the whole new depiction of the future of technology as it backs the prompt development and prototyping.

These frameworks and libraries have already reshaped the way how JS collaborates with HTML and CSS to compile views both in browsers and now even on native platforms.

#java script framework #javascript framework development #javascript development 2020 #website development company

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hydralisk98 · 5 years ago

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hydralisk98′s web projects tracker:

Core principles=

Fail faster

‘Learn, Tweak, Make’ loop

This is meant to be a quick reference for tracking progress made over my various projects, organized by their “ultimate target” goal:

(START)

(Website)=

Install Firefox

Install Chrome

Install Microsoft newest browser

Install Lynx

Learn about contemporary web browsers

Install a very basic text editor

Install Notepad++

Install Nano

Install Powershell

Install Bash

Install Git

Learn HTML

Elements and attributes

Commenting (single line comment, multi-line comment)

Head (title, meta, charset, language, link, style, description, keywords, author, viewport, script, base, url-encode, )

Hyperlinks (local, external, link titles, relative filepaths, absolute filepaths)

Headings (h1-h6, horizontal rules)

Paragraphs (pre, line breaks)

Text formatting (bold, italic, deleted, inserted, subscript, superscript, marked)

Quotations (quote, blockquote, abbreviations, address, cite, bidirectional override)

Entities & symbols (&entity_name, &entity_number, &nbsp, useful HTML character entities, diacritical marks, mathematical symbols, greek letters, currency symbols, )

Id (bookmarks)

Classes (select elements, multiple classes, different tags can share same class, )

Blocks & Inlines (div, span)

Computercode (kbd, samp, code, var)

Lists (ordered, unordered, description lists, control list counting, nesting)

Tables (colspan, rowspan, caption, colgroup, thead, tbody, tfoot, th)

Images (src, alt, width, height, animated, link, map, area, usenmap, , picture, picture for format support)

old fashioned audio

old fashioned video

Iframes (URL src, name, target)

Forms (input types, action, method, GET, POST, name, fieldset, accept-charset, autocomplete, enctype, novalidate, target, form elements, input attributes)

URL encode (scheme, prefix, domain, port, path, filename, ascii-encodings)

Learn about oldest web browsers onwards

Learn early HTML versions (doctypes & permitted elements for each version)

Make a 90s-like web page compatible with as much early web formats as possible, earliest web browsers’ compatibility is best here

Learn how to teach HTML5 features to most if not all older browsers

Install Adobe XD

Learn Adobe XD basics

Learn Figma basics

Install Microsoft’s VS Code

Install my Microsoft’s VS Code favorite extensions

Learn HTML5

Semantic elements

Layouts

Graphics (SVG, canvas)

Track

Audio

Video

Embed

APIs (geolocation, drag and drop, local storage, application cache, web workers, server-sent events, )

HTMLShiv for teaching older browsers HTML5

HTML5 style guide and coding conventions (doctype, clean tidy well-formed code, lower case element names, close all html elements, close empty html elements, quote attribute values, image attributes, space and equal signs, avoid long code lines, blank lines, indentation, keep html, keep head, keep body, meta data, viewport, comments, stylesheets, loading JS into html, accessing HTML elements with JS, use lowercase file names, file extensions, index/default)

Learn CSS

Selections

Colors

Fonts

Positioning

Box model

Grid

Flexbox

Custom properties

Transitions

Animate

Make a simple modern static site

Learn responsive design

Viewport

Media queries

Fluid widths

rem units over px

Mobile first

Learn SASS

Variables

Nesting

Conditionals

Functions

Learn about CSS frameworks

Learn Bootstrap

Learn Tailwind CSS

Learn JS

Fundamentals

Document Object Model / DOM

JavaScript Object Notation / JSON

Fetch API

Modern JS (ES6+)

Learn Git

Learn Browser Dev Tools

Learn your VS Code extensions

Learn Emmet

Learn NPM

Learn Yarn

Learn Axios

Learn Webpack

Learn Parcel

Learn basic deployment

Domain registration (Namecheap)

Managed hosting (InMotion, Hostgator, Bluehost)

Static hosting (Nertlify, Github Pages)

SSL certificate

FTP

SFTP

SSH

CLI

Make a fancy front end website about

Make a few Tumblr themes

===You are now a basic front end developer!

Learn about XML dialects

Learn XML

Learn about JS frameworks

Learn jQuery

Learn React

Contex API with Hooks

Learn Vue.js

Vuex

NUXT

Learn Svelte

NUXT (Vue)

Learn Gatsby

Learn Gridsome

Learn Typescript

Make a epic front end website about

===You are now a front-end wizard!

Learn Node.js

Express

Nest.js

Koa

Learn Python

Django

Flask

Learn GoLang

Revel

Learn PHP

Laravel

Slim

Symfony

Learn Ruby

Ruby on Rails

Sinatra

Learn SQL

PostgreSQL

MySQL

Learn ORM

Learn ODM

Learn NoSQL

MongoDB

RethinkDB

CouchDB

Learn a cloud database

Firebase, Azure Cloud DB, AWS

Learn a lightweight & cache variant

Redis

SQLlite

NeDB

Learn GraphQL

Learn about CMSes

Learn Wordpress

Learn Drupal

Learn Keystone

Learn Enduro

Learn Contentful

Learn Sanity

Learn Jekyll

Learn about DevOps

Learn NGINX

Learn Apache

Learn Linode

Learn Heroku

Learn Azure

Learn Docker

Learn testing

Learn load balancing

===You are now a good full stack developer

Learn about mobile development

Learn Dart

Learn Flutter

Learn React Native

Learn Nativescript

Learn Ionic

Learn progressive web apps

Learn Electron

Learn JAMstack

Learn serverless architecture

Learn API-first design

Learn data science

Learn machine learning

Learn deep learning

Learn speech recognition

Learn web assembly

===You are now a epic full stack developer

Make a web browser

Make a web server

===You are now a legendary full stack developer

[...]

(Computer system)=

Learn to execute and test your code in a command line interface

Learn to use breakpoints and debuggers

Learn Bash

Learn fish

Learn Zsh

Learn Vim

Learn nano

Learn Notepad++

Learn VS Code

Learn Brackets

Learn Atom

Learn Geany

Learn Neovim

Learn Python

Learn Java?

Learn R

Learn Swift?

Learn Go-lang?

Learn Common Lisp

Learn Clojure (& ClojureScript)

Learn Scheme

Learn C++

Learn C

Learn B

Learn Mesa

Learn Brainfuck

Learn Assembly

Learn Machine Code

Learn how to manage I/O

Make a keypad

Make a keyboard

Make a mouse

Make a light pen

Make a small LCD display

Make a small LED display

Make a teleprinter terminal

Make a medium raster CRT display

Make a small vector CRT display

Make larger LED displays

Make a few CRT displays

Learn how to manage computer memory

Make datasettes

Make a datasette deck

Make floppy disks

Make a floppy drive

Learn how to control data

Learn binary base

Learn hexadecimal base

Learn octal base

Learn registers

Learn timing information

Learn assembly common mnemonics

Learn arithmetic operations

Learn logic operations (AND, OR, XOR, NOT, NAND, NOR, NXOR, IMPLY)

Learn masking

Learn assembly language basics

Learn stack construct’s operations

Learn calling conventions

Learn to use Application Binary Interface or ABI

Learn to make your own ABIs

Learn to use memory maps

Learn to make memory maps

Make a clock

Make a front panel

Make a calculator

Learn about existing instruction sets (Intel, ARM, RISC-V, PIC, AVR, SPARC, MIPS, Intersil 6120, Z80...)

Design a instruction set

Compose a assembler

Compose a disassembler

Compose a emulator

Write a B-derivative programming language (somewhat similar to C)

Write a IPL-derivative programming language (somewhat similar to Lisp and Scheme)

Write a general markup language (like GML, SGML, HTML, XML...)

Write a Turing tarpit (like Brainfuck)

Write a scripting language (like Bash)

Write a database system (like VisiCalc or SQL)

Write a CLI shell (basic operating system like Unix or CP/M)

Write a single-user GUI operating system (like Xerox Star’s Pilot)

Write a multi-user GUI operating system (like Linux)

Write various software utilities for my various OSes

Write various games for my various OSes

Write various niche applications for my various OSes

Implement a awesome model in very large scale integration, like the Commodore CBM-II

Implement a epic model in integrated circuits, like the DEC PDP-15

Implement a modest model in transistor-transistor logic, similar to the DEC PDP-12

Implement a simple model in diode-transistor logic, like the original DEC PDP-8

Implement a simpler model in later vacuum tubes, like the IBM 700 series

Implement simplest model in early vacuum tubes, like the EDSAC

[...]

(Conlang)=

Choose sounds

Choose phonotactics

[...]

(Animation ‘movie’)=

[...]

(Exploration top-down ’racing game’)=

[...]

(Video dictionary)=

[...]

(Grand strategy game)=

[...]

(Telex system)=

[...]

(Pen&paper tabletop game)=

[...]

(Search engine)=

[...]

(Microlearning system)=

[...]

(Alternate planet)=

[...]

(END)

#personal project

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ashcamelia1 · 3 years ago

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Remote Staff Augmentation Services by IT Company

Living in a world that is changing dynamically and uncertainly, the need for instant hiring is growing direct proportionate to this! Since the load of IT works and employees on the company is in top-notch demand, there's a concern to fulfill the requirements of customers increases stress over the various companies dealing with the problem. If there's a problem, the solution lies within that, all thanks to IT Staff Augmentation services. This solves all the hectic tasks.

Learn about Staff Augmentation… Hmmm… curious???

Staff Augmentation is an outsourcing method that includes hiring qualified technical employees from other IT companies either for a short or long period for the accomplishment of extra loaded tasks. This is a cost-effective and very commendable option for filling the gaps lies between the technical project requirements. This also reduces the cost and burden of recruiting employees.

Navtark acting as the Background artist for your play Yes, this sounds good ain't this?

Our expert team at Navtark provides you with the best IT employees that fulfill all your tech-related projects with all their skills and hard work that acts as your support network for all your roles and responsibilities.

#Strategic Sourcing- design your retained organization with our remote expertise!

⦁ Navtark here with a team of all expertise resolves and formulates all your backlogging expectations regarding resource augmentation.

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#Expertise Possibilities with IT talent

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⦁ Add Resources to your Existing Project- Access an additional talent pool and flexible engagement models to augment your software teams with top development talent.

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Hire The Professional Talent From Navtark

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Navtark is embedded with real gems that fulfill the needs of renowned resource augmentation agencies.

PHP Framework-

i. Laravel

ii. Symfony

iii. CodeIgniter

iv. Zend Framework

v. Project Yii

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Java Framework-

i. Spring

ii. Hibernate

iii. Struts

iv. Google Web Toolkit

v. Java Server Faces

vi. Grails

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For more information

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#NavtarkSolutions #remote hiring #staff augmentation services #organisedteam

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codehunger · 3 years ago

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Use v-select in Vue js

In this article, we will learn about how we can use v-select in Vue js. I will show you step by step guide to implement v-select with options in Vue js. Basic Example of v-select In the below example you will learn how to implement v-select with options. <template> <div> <v-select v-model="selected" label="title" :options="multipleOption"/> </div> </template> <script> import…

View On WordPress

#multiple select #multiple select vue js #v select default value #v select dynamic options #v select multiple example #v select options #v select reduce #v select vuejs #v select vuetify example #v-select vue json #vue select

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carsai-precisionparts · 3 years ago

Video

tumblr

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hatarakublog · 4 years ago

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Vue.jsのv-modelディレクティブを使った双方向バインディングの実装方法について解説しています！

ぜひご覧ください！

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psychicanchortimemachine · 4 years ago

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IONIC 5- UPDATES

The Ionic Framework team has launched model 5.0.0( Magnesium ) on 11th Feb 2020. This new version centered considerably on material layout recommendations which advanced the UI consists of iOS 13 & Android design, compatibility with multiple frameworks (not best with Angular however now it supports react framework), ionic 5 capabilities consist of remodeled Ionicons, up to date Ionic colorings, new API for growing your very own custom animations, new starter designs, improvements to issue customization, up to date documentation and other enhancements that we can analyze in this article.

How to Update Ionic 4 App to Latest Ionic 5 Version?

For an Angular app

npm install @ionic/angular@latest --save

For a React app

npm install @ionic/react@latest --save npm install @ionic/react-router@latest --save npm install ionicons@latest --save

Top capabilities added in Ionic 5:

iOS Design

The latest version of the Ionic framework has a large section of the updated UI component compatible with IOS 13.Apple recently released its iOS 13 update, in which they up to date the design of many components and accordingly included a few updates to our own, these consist of headers, segments, huge and small titles, and the menu overlay type.

Segment

The ionic crew has absolutely remodeled the iOS Segment layout extensively from its preceding iOS model. With the ionic five design replace, a single indicator is now used to slide between the buttons, checking the only it ends on. Now it makes use of a gesture that may be used to pull the indicator that applies for both Material Design and iOS and some adjustments had been added to support the brand new design.

Header

The header is a root issue of the page that holds the toolbar aspect. Some properties to get a collapsible header and buttons are now available to use.In ionic v4 iOS added the idea of a collapsible header and special sized titles. In Ionic version 5, a few residences are added to the header & name additives to get small titles, shrinking broad claims, and collapsible buttons.

Large Title

The way to do so is to add two headers, one standard-sized above the content and one large-sized inside the content. Other elements, like the search bar in the large header, can also collapse.Ionic v 4 provides a manner to create the collapsible titles that exist on inventory iOS apps. The huge title in iOS collapses right into a default sized title when the content scrolls exceeding a certain point & this setup calls for configuring your IonTitle, IonHeader, and IonButtons elements.

Small Title

The small refers as a header note often used in combination with Swipe to Close Modals. It normally used internal of a toolbar above some other toolbar that contains a standard-sized identify (Additionally, to get the small title styling, ion-name ought to have size="Small".

Swipe to Close Modal

You can now add a modal that remains inset with the page behind it propelled back. A gesture could be used to control swipe to close modal.The Swipe to Close Modals in iOS mode has the capacity to be offered in a card-style and swiped to close mode rather than displaying a modal that covers the whole screen. The card-fashion presentation and swipe to shut gesture want to permit I.e. swipeToClose and imparting element need to be surpassed upon modal creation. Ionic five has includes a gesture to drag the modal down to shut it.

Refresher

The ion-refresher produces pull-to-refresh capability on a content issue & it's pulling icon in iOS has been updated above a header with a huge name. The pull-to-refresh pattern shall we a user pull down on a listing of records the usage of contact to retrieve greater statistics & as you pull down on the content the spinner rotates till the content material is pulled down enough to in which all ticks are seen after which it will start to rotate. IOS refresher in ionic v5 has absolutely redesigned to Material Design refresher.

List Header

ListHeader a header element for a listing and the lists in iOS now grow to be greater massive and bold layout. Comparing ionic v4, the List Header turned into uppercase and small and didn’t have the option for a bottom border. The new lines assets on a List Header permits you to add a border while matching the contemporary design.The Ionic framework official website suggests wrapping all text content of the list header inside an <ion-label>. It is required to support the changes in the List header.

Ionic Animations

Ionic Animations is an open-supply animations software that offers developers the equipment to construct surprisingly performant animations no matter the framework they're using. Ionic Animations is now officially a part of the ionic five.zero launch which makes use of the Web Animations API to build and run all your animations. Web browser time table to run all your animations which offloads essential duties and prioritize optimizations to your animations permitting your animation to run easily as viable which enables you achieve excessive FPS which preserving low CPU makes use of.Ionic 5 ships with the trendy version open-supply icon library Ionicons five, which includes all-new icons for use in web, iOS, Android, and computing device apps.

Ionic Colors

Ionic has nine default colors that may be used to exchange the color of many additives & on the way to alternate the default colorations we have to exchange the coloration characteristic. Ionic 5 up to date with all new colors by using default also to exchange the colours of your Angular or React app builders want to update the subject/variables css manually. Now ionic 5 supports the dark.

Easier Customization

We all know that the additives are not very easy to customize due to following reasonsLack of to be had CSS Variables or way to style internal factors.

Components are being scoped and their Ionic styles taking precedence over custom styles.To make it simpler for builders, ionic team brought assist for extra CSS variables,

transformed some scoped components to Shadow DOM, and commenced adding aid for Shadow Parts.

The following additives were converted to Shadow DOM:

Back Button

Card

Segment

Split Pane

Shadow DOM

An critical element of web components is encapsulation and shadow DOM serves for encapsulation. It lets in a aspect to have its very very own “shadow” DOM tree, that it is markup structure, fashion, and conduct hidden and separate from different code on the web page that can’t be by accident accessed from the primary document and the code may be kept satisfactory and clean.

In addition to that, Shadow DOM permits the use of custom CSS variables inside the issue for less difficult theming. In previous versions, Sass variables have been used to customise and subject an app but that brought on longer construct times but to have more than one themes within the identical app it required developing multiple CSS documents with different Sass variables.

With the growing assist for Shadow Parts in browsers, users could be capable of goal particular elements inside of our components to override their styles directly.

Angular Ivy

One of the biggest improvements to the brand new Angular v9.0 is that Ivy is enabled with the aid of default & for Ionic Angular builders, Ivy support is now completely enabled in Ionic 5. Ivy permits apps to only maintain pieces of the renderer that they require, rather than the whole thing. This approach that our final output may be distinctly smaller, which is better for load performance. The manner the CSS variables are used for targeting the activated, targeted and hover backgrounds have been updated at the following components:

Action Sheet

Back Button

Button

FAB Button

Item

Menu Button

Segment Button

Tab Button

Anchor : The ion-anchor thing has been renamed to ion-router-link Back Button : Converted ion-returned-button to use shadow DOM. Card : Converted ion-card to apply shadow DOM. Header / Footer : The no-border attribute has been renamed to ion-no-border Menu : Removed the main characteristic, use content material-id (for vanilla JS / Vue) and contentId (for Angular / React) instead. Use swipeGesture() in preference to swipeEnable() function Colors : The default Ionic shades have been updated to the following: primary:

#3880ff

secondary:

#3dc2ff

tertiary:

#5260ff

success:

#2dd36f

warning:

#ffc409

danger:

#eb445a

light:

#f4f5f8

medium:

#92949c

dark: #222428 Ionic five features bring a few solid modifications which includes iOS 13 layout updates, a new API for creating custom animations, made over Ionicons, updated Ionic colours, complete assist for Ivy, Angular’s new renderer, new starter designs, Ionic CLI 5 and the assist for React frameworks at the side of the Angular.

Hopefully, Ionic v5 will take the Ionic app improvement to every other degree and will help to develop the cross-platform app that may run on the computer, as PWAs, web, and cell platforms.

We wish these modifications will enhance your build time and productivity on the ionic platform.

The good thing is you don’t need to worry lots about dealing with the updates as the process is simple.

Just ensure to have a examine breaking changes document so that you may want to make adjustments in your app.

We will be happy to answer your questions on designing, developing, and deploying comprehensive enterprise web, mobile apps and customized software solutions that best fit your organization needs. As a reputed Software Solutions Developer we have expertise in providing dedicated remote and outsourced technical resources for software services at very nominal cost. Besides experts in full stacks We also build web solutions, mobile apps and work on system integration, performance enhancement, cloud migrations and big data analytics. Don’t hesitate to

get in touch with us!

#b2b content marketing #b2bsales

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stephenwu5 · 5 years ago

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js使用经验--取值，改值，渲染

js使用经验–取值，改值，渲染

有时间了，就写一写前端的项目遇到的几个常见的问题，为了记录工作，总结下，对自己有或多或少的帮助。也许，十几年后回过头来，能看到自己的影子，走过的路迹。

因为深度拷贝项目中用的多，所以啊，也在里面提及。

取值

前端是什么，前端就是把后台的数据或者自定义的数据渲染到页面上，或者自定义数据或者从页面拿数据作为参数给后台接口。渲染数据主要用的是后台的数据，而给后台接口的数据主要来自页面或者后台上一次的接口。

所以从页面（html）拿数据给后台就变得很重要或者频繁，做好这一步，对工作效率的提高是很大的帮助。

方式一、原生js支持dataSet，只要在标签内 data-就能嵌入值，在js里面dom.dataset就能拿到对应的值。

方式二、vue有双向数据绑定，v-model把data的值插入到标签。这个data的值就是需要的值。

啥时候取值

在项目中有时不会这个简…

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laravelvuejs · 5 years ago

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Vue JS 2 Tutorial #29 – Input Binding (Creating a blog, part 1) Hey gang, in this Vue JS 2 tutorial we'll start to create our small blog application. The first thing we'll cover is input binding. ----- COURSE LINKS: + Repo ... source

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strptoh1210 · 5 years ago

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勉強2020/02/14 vue.js

https://www.udemy.com/course/vue-js-complete-guide/learn/lecture/15371424?start=15#overview

122,123, 124, 125, 126, 127, 128, 129

textareaも同じようにv-model使える

checkboxの場合は単体と複数で扱いが違う。

単体の場合は、値はtrue/falseになる。

複数の場合は、値は配列になる。

radioの場合はvalueの値になる。

selectも複数選択の場合は配列になる。

Componentでv-modelを使う場合

<template> <div> <label for="title">イベント名</label> <input id="title" type="text" :value="value" @input="$emit('input', $event.target.value)" /> <p>{{value}}</p> </div></template> <script>export default { props:["value"]}</script>

#vue

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t-baba · 6 years ago

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An Introduction to Data Visualization with Vue and D3.js

Web applications are normally data-driven and oftentimes the need arises to visualize this data. That’s where charts and graphs come in. They make it easier to convey information, as well as demonstrate correlations or statistical relationships. Information presented in the form of a chart or a graph is also easier for a non-native speaker to understand.

In this tutorial, we’ll learn how to visualize data in a Vue project. For this, we’ll be using the popular D3.js library, which combines powerful visualization components and a data-driven approach to DOM manipulation.

Let’s get started.

Note: the code for this tutorial can be found on GitHub.

What is D3?

As you can read on the project’s home page, D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS. Its emphasis on web standards gives you the full capabilities of modern browsers without tying yourself to a proprietary framework.

Whereas most people will refer to D3.js as a data visualization library, it’s not. D3 is more of a framework comprising different parts — such as jQuery parts (which help us select and manipulate DOM elements), Lodash parts, animation parts, data analysis parts, and data visualization parts.

In this tutorial, we’ll be working with the visualization aspect of D3. The real meat of D3 when visualizing data is:

the availability of functions for decorating data with drawing instructions

creating new drawable data from source data

generating SVG paths

creating data visualization elements (like an axis) in the DOM from your data and methods

What We’ll Be Building

We want to create an app that lets users search for a repo on GitHub, then get a visual representation of issues opened in the past week that are still open. The end result will look like this:

Prerequisites

This tutorial assumes you have a working knowledge of Vue. Previous knowledge of D3.js isn’t required, but if you’d like to get up to speed quickly, you might want to read our D3 by example tutorial.

You’ll also need to have Node installed on your system. You can do this by downloading the binaries for your system from the official website, or using a version manager.

Finally, we’ll be using the following packages to build our app:

Vue CLI — to scaffold out the project

D3.js — to visualize our data

Lodash — which provides a handful of utility methods

Moment JS — for date and time formatting

axios — an HTTP client to help us make requests to an external API

New Vue Project

I prefer creating new Vue projects using Vue CLI. (If you’re not familiar with Vue CLI, our beginner’s guide in this Vue series gives a full introduction.) Vue CLI provides a nice folder structure for placing different sections of the code, such as styles, components, and so on.

Make sure that the CLI is installed on your machine:

npm install -g @vue/cli

Then create a new project with the following command:

vue create issues-visualization

Note: while creating a new project using Vue CLI, you’ll be prompted to pick a preset. For this particular project, we’ll just stick with the default (Babel + ESLint).

Once our new Vue project has been created, we cd into the project folder and add the various node modules we’ll need:

npm install lodash d3 axios moment

Even though this is a simple app that doesn’t have many running parts, we’ll still take the components approach instead of dumping all the code inside the App.vue file. We’re going to have two components, the App component and a Chart component that we’re yet to create.

The App component will handle fetching data from GitHub, then pass this data to the Chart component as props. The actual drawing of the chart will happen inside the Chart component. Structuring things this way has the advantage that, if you want to use a library other than axios to fetch the data, it’ll be easier to swap it out. Also, if you want to swap D3 for a different charting library, that’ll be easier too.

Building the Search Interface

We’ll start by building a search interface that lets users enter the name of the repo they want to see visualized.

In src/App.vue, get rid of everything inside the <template> tag and replace the content with this:

Here we have a form which, upon submission, prevents the browser’s default submission action, then calls a getIssues method that we’re yet to define. We’re also using a v-model directive to bind the input from the form to a repository property inside the data model of our Vue instance. Let’s declare that property repository as an empty string. We’ll also add a startDate property, which we’ll later use as the first date in our time range:

import moment from "moment"; import axios from "axios"; export default { name: "app", data() { return { issues: [], repository: "", startDate: null }; }, methods: { getIssues() { // code goes in here } } };

Now on to creating the getIssues method:

getIssues() { this.startDate = moment() .subtract(6, "days") .format("YYYY-MM-DD"); axios .get( `https://api.github.com/search/issues?q=repo:${this.repository}+is:issue+is:open+created:>=${this.startDate}`, { params: { per_page: 100 } } ) .then(response => { const payload = this.getDateRange(); response.data.items.forEach(item => { const key = moment(item.created_at).format("MMM Do YY"); const obj = payload.filter(o => o.day === key)[0]; obj.issues += 1; }); this.issues = payload; console.log(this.issues); }); }

In the above block of code, we start by setting the startDate data property to six days ago and formatting it for use with the GitHub API.

We then use axios to make an API request to GitHub to get all issues for a particular repository that were opened in the past week and that are still open. You can refer to GitHub’s search API if you need more examples on how to come up with query string parameters.

When making the HTTP request, we set the results count to 100 per page (the max possible). There are hardly any repositories with over 100 new issues per week, so this should be fine for our purposes. By default, the per_page value is 30.

If the request completes successfully, we use a custom getDateRange method to initialize a payload variable that we will be able to pass to the Chart component. This payload is an array of objects that will like so:

[ {day: "Dec 7th 18", issues: 0}, {day: "Dec 8th 18", issues: 0}, {day: "Dec 9th 18", issues: 0}, {day: "Dec 10th 18", issues: 0}, {day: "Dec 11th 18", issues: 0}, {day: "Dec 12th 18", issues: 0}, {day: "Dec 13th 18", issues: 0} ]

After that, we iterate over the API’s response. The data we’re interested in is in an items key on a data property on the response object. From this, we take the created_at key (which is a timestamp) and format it as the day property in our objects above. From there, we then look up the corresponding date in the payload array and increment the issues count for that date by one.

Finally, we assign the payload array to our issues data property and log the response.

Next, let’s add in the getDateRange method:

methods: { getDateRange() { const startDate = moment().subtract(6, 'days'); const endDate = moment(); const dates = []; while (startDate.isSameOrBefore(endDate)) { dates.push({ day: startDate.format('MMM Do YY'), issues: 0 }); startDate.add(1, 'days'); } return dates; }, getIssues() { ... } }

Before we get to the visualization bit, let’s also log any errors we might encounter when making our request to the console (for debugging purposes):

axios .get( ...) .then(response => { ... }) .catch(error => { console.error(error); });

We’ll add some UX for informing the user in the case that something went wrong later.

So far, we have an input field that lets the user enter the organization/repository name they wish to search issues for. Upon form submission, all issues opened in the past one week are logged to the console.

Below is an example of what was logged on the console for the facebook/react repo:

If you start up the Vue dev server using npm run serve and enter some different repos, you should see something similar. If you’re stuck for inspiration, check out GitHub’s Trending page.

Next comes the fun bit — visualizing this data.

Drawing a Bar Chart Using D3

Earlier on, we mentioned that all the drawing will be handled inside a Chart component. Let’s create the component:

touch src/components/Chart.vue

D3 works on SVG elements, and for us to draw anything with D3, we need to have an SVG element on the page. In our newly created component (src/components/Chart.vue), let’s create an SVG tag:

For this particular tutorial, we’ll visualize our data using a bar chart. I picked a bar chart because it represents a low complexity visual element while it teaches the basic application of D3.js itself. The bar chart is also a good intro to the most important D3 concepts, while still having fun!

Before proceeding, let’s update our App component to include the newly created Chart component below the form:

Let’s also register it as a component:

import Chart from './components/Chart.vue'; export default { name: "app", components: { Chart }, ... }

Notice how we’re passing the value of the issues data property to the Chart component as a prop:

Let’s now update our Chart component to make use of that data:

In the above code block, we’re importing D3 and Lodash. We then instantiate a chart data property as null. We’ll assign a value to this when we start drawing later on.

Since we want to draw the chart every time the value of issues changes, we’ve created a watcher for issues. Each time this value changes, we’ll destroy the old chart and then draw a new chart.

Drawing will happen inside the renderChart method. Let’s start fleshing that out:

renderChart(issues_val) { const margin = 60; const svg_width = 1000; const svg_height = 600; const chart_width = 1000 - 2 * margin; const chart_height = 600 - 2 * margin; const svg = d3 .select("svg") .attr("width", svg_width) .attr("height", svg_height); }

Here, we set the height and width of the SVG element we just created. The margin attribute is what we’ll use to give our chart some padding.

D3 comes with DOM selection and manipulation capabilities. Throughout the tutorial, you’ll see lot’s of d3.select and d3.selectAll statements. The difference is that select will return the first matching element while selectAll returns all matching elements.

The post An Introduction to Data Visualization with Vue and D3.js appeared first on SitePoint.

by Christopher Vundi via SitePoint https://ift.tt/2KdTjHU

#CSS3 #HTML5 Branding #HTML5 Weekly #HTMLl5 demos #Javascript Branding #Javascript Weekly #Mobile #Mo

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codehunger · 4 years ago

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Vue js - how to use ternary operator in vue

Vue js – how to use ternary operator in vue

In this blog we will learn about how to use the ternary operator in vue js I will show you how to use ternary with v-model in vuejs. we can easily use the ternary operator for conditions in Vue js. Before moving forward let’s know something about the ternary operator.In computer programming, ?: is a ternary operator that is part of the syntax for basic conditional expressions in…

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#or operator in vue js #ternary operator in javascript #ternary operator in nuxt js #v for conditional #v if ternary #vue js add class based on condition #vue js data binding #vue ternary operator in html

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ahmedsalmanmagento-blog · 5 years ago

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Things That You Never Expect To Develop Native Apps With Vue Js Framework

In a short timeframe, this system has become the most requested structure with regards to JavaScript. Vue.js has more than 138K supporters in GitHub. This structure was at first grown in order to make a front-end UI format for the two networks notwithstanding portable applications.

Vue.js has figured out how to get a couple of the best attributes of AngularJS notwithstanding React JS and incorporated its own astounding functionalities to make a basic yet profoundly working yet moderate contemporary plan of the JavaScript system. As indicated by the reports of 2018, it's been seen that over 46.6% of respondents need to discover this new edge and execute it. Its predominance is at its top most definitely. Purposes behind the prevalence and huge use are as per the following:

1. Vue.js is object-arranged which engages it to make cases that are broadly utilized for rendering of components. With an article situated methodology, information could be sent to the view with less confounded language structure and without the necessity of any middle moderate. Moreover, components can be rendered naturally and it needn't bother with coding making the improvement significantly simpler and spares time just as exertion. In the long run, the pieces of the code is effortlessly changed by the client with the assistance of instruments. There are numerous different highlights, for example, JQuery which helps in keeping up the information in the DOM and changing all parts that may require additional rendering or changing which prompts making profoundly responsive website architecture arrangements.

2. Vue.js is an easy to understand and straightforward JavaScript stage. It has such a significant number of accommodating functionalities which aren't found in React or Angular. These functionalities are used generally for program creation and site improvement arrangements.

3. This edge involves such a large number of events just as handlers. Occasions can be depicted as the component which can contain the whole history of association that occurred between different half breed or web programming and its clients. V-on mandates with colons can be utilized to make events in Vue.js. The primary capacity of the orders is to indicate the kind of event. For example v-on: click. Occasions are by one way or another extremely dubious to make and oversee. Subsequently, different handlers are relegated. The principle employment of the handler is to control applications about what occupation they have to do if the order of a specific occasion is activated. There are heaps of components inside Vue.js. These segments are fundamentally the same as different libraries existing right now. To make a segment in Vue.js, the client should initially get to the component"Vue.component". This specific part is comprised of name or identifier together with a setup. After this, different layouts can be given to coders, which would then be able to be remembered for the DOM and other required props. There is a particular capacity called the"v-tie" work which helps the formats to go in the props.

4 Vue.js additionally gives the property of contingent information official. Clients may order the machine to interface data just if the predetermined condition or some worth is valid; else, it'll naturally go into the trash. For doing likewise, different orders like v-if and v-else become possibly the most important factor. On the off chance that the coder might want to assess some value as precise and print it, at that point he/she runs the v-if layout. The two mandates have their modules and are utilized massively in web improvement and furthermore for making different codes.

5. There is a basic API convention that helps the piece of code to circle with the assistance of clusters. To do this, the purchasers should get the objective cluster and put the order (here, v-for is utilized). Also, clients can see the entirety of the properties of codes and items as the cluster stores the articles as it were. At the point when the v-for include is utilized from the exhibit, it partitions out articles that utilization circling usefulness with the help of particular properties. Vue accompanies a stunning element of two-way data authoritative and receptive information official. The most significant activity of responsive information restricting is to stay up with the latest with no sort of human impedance. To actualize this, the v-model is embedded and afterward changes into the DOM according to orders.

Vue.js is currently utilized by web advancement firms that give the most extreme site improvement administrations on account of its exceptionally usable web improvement and easy to deal with highlights. It is likewise utilized by those organizations that are providing responsive website architecture administrations. Its UI has various captivating attributes that are anticipating to by clients to grow great website pages and programming.

Author Bio:

Salman Ahmed is a Business Manager at Magneto IT Solutions – a Software development company in Bahrain offers quality vue Js Development services, Magento development,ecommerce development, Magento migration, b2b ecommerce development services. The company has experienced Vue js developers for hire at a very affordable price. He is a firm believer in teamwork; for him, it is not just an idea, but also the team’s buy-in into the idea, that makes a campaign successful! He’s enthusiastic about all things marketing.

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psychicanchortimemachine · 4 years ago

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IONIC 5- UPDATES

How to Update Ionic 4 App to Latest Ionic 5 Version?

For an Angular app

npm install @ionic/angular@latest --save

For a React app

npm install @ionic/react@latest --save npm install @ionic/react-router@latest --save npm install ionicons@latest --save

Top capabilities added in Ionic 5:

iOS Design

Segment

Header

Large Title

Small Title

Swipe to Close Modal

Refresher

List Header

Ionic Animations

Ionic Colors

Easier Customization

We all know that the additives are not very easy to customize due to following reasonsLack of to be had CSS Variables or way to style internal factors.

Components are being scoped and their Ionic styles taking precedence over custom styles.To make it simpler for builders, ionic team brought assist for extra CSS variables,

transformed some scoped components to Shadow DOM, and commenced adding aid for Shadow Parts.

The following additives were converted to Shadow DOM:

Back Button

Card

Segment

Split Pane

Shadow DOM

With the growing assist for Shadow Parts in browsers, users could be capable of goal particular elements inside of our components to override their styles directly.

Angular Ivy

Action Sheet

Back Button

Button

FAB Button

Item

Menu Button

Segment Button

Tab Button

#3880ff

secondary:

#3dc2ff

tertiary:

#5260ff

success:

#2dd36f

warning:

#ffc409

danger:

#eb445a

light:

#f4f5f8

medium:

#92949c

Hopefully, Ionic v5 will take the Ionic app improvement to every other degree and will help to develop the cross-platform app that may run on the computer, as PWAs, web, and cell platforms.

We wish these modifications will enhance your build time and productivity on the ionic platform.

The good thing is you don’t need to worry lots about dealing with the updates as the process is simple.

Just ensure to have a examine breaking changes document so that you may want to make adjustments in your app.

get in touch with us!

#b2bsales #b2b content marketing

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suzanneshannon · 5 years ago

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How to Build Vue Components in a WordPress Theme

Intrigued by the title and just wanna see some code? Skip ahead.

A few months ago, I was building a WordPress website that required a form with a bunch of fancy conditional fields. Different options and info were required for different choices you could make on the form, and our client needed complete control over all fields 1. In addition, the form needed to appear in multiple places in each page, with slightly different configs.

And the header instance of the form needed to be mutually exclusive with the hamburger menu, so that opening one closes the other.

And the form had text content that was relevant to SEO.

And we wanted the server response to present some cute animated feedback.

(Phew.)

The whole thing felt complex enough that I didn't want to handle all that state manually. I remembered reading Sarah Drasner’s article "Replacing jQuery With Vue.js: No Build Step Necessary” which shows how to replace classic jQuery patterns with simple Vue micro-apps. That seemed like a good place to start, but I quickly realized that things would get messy on the PHP side of WordPress.

What I really needed were reusable components.

PHP → JavaScript

I love the static-first approach of Jamstack tools, like Nuxt, and was looking to do something similar here — send the full content from the server, and progressively enhance on the client side.

But PHP doesn’t have a built-in way to work with components. It does, however, support require-ing files inside other files 2. WordPress has an abstraction of require called get_template_part, that runs relative to the theme folder and is easier to work with. Dividing code into template parts is about the closest thing to components that WordPress provides 3.

Vue, on the other hand, is all about components — but it can only do its thing after the page has loaded and JavaScript is running.

The secret to this marriage of paradigms turns out to be the lesser-known Vue directive inline-template. Its great and wonderful powers allow us to define a Vue component using the markup we already have. It’s the perfect middle ground between getting static HTML from the server, and mounting dynamic DOM elements in the client.

First, the browser gets the HTML, then Vue makes it do stuff. Since the markup is built by WordPress, rather than by Vue in the browser, components can easily use any information that site administrators can edit. And, as opposed to .vue files (which are great for building more app-y things), we can keep the same separation of concerns we use for the whole site — structure and content in PHP, style in CSS, and functionality in JavaScript.

To show how this all fits together, we’re going to build a few features for a recipe blog. First, we’ll add a way for users to rate recipes. Then we’ll build a feedback form based on that rating. Finally, we’ll allow users to filter recipes, based on tags and rating.

We’ll build a few components that share state and live on the same page. To get them to play nicely together — and to make it easy to add additional components in the future — we’ll make the whole page our Vue app, and register components inside it.

Each component will live in its own PHP file and be included in the theme using get_template_part.

Laying the groundwork

There are a few special considerations to take into account when applying Vue to existing pages. The first is that Vue doesn't want you loading scripts inside it — it will send ominous errors to the console if you do. The easiest way to avoid this is to add a wrapper element around the content for every page, then load scripts outside of it (which is already a common pattern for all kinds of reasons). Something like this:

<?php /* header.php */ ?> <body <?php body_class(); ?>> <div id="site-wrapper">

<?php /* footer.php */ ?> </div>  <?php wp_footer(); ?>

The second consideration is that Vue has to be called at the end of body element so that it will load after the rest of the DOM is available to parse. We’ll pass true as the fifth argument (in_footer) for the wp_enqueue_script function. Also, to make sure Vue is loaded first, we’ll register it as a dependency of the main script.

<?php // functions.php add_action( 'wp_enqueue_scripts', function() { wp_enqueue_script('vue', get_template_directory_uri() . '/assets/js/lib/vue.js', null, null, true); // change to vue.min.js for production wp_enqueue_script('main', get_template_directory_uri() . '/assets/js/main.js', 'vue', null, true);

Finally, in the main script, we’ll initialize Vue on the site-wrapper element.

// main.js new Vue({ el: document.getElementById('site-wrapper') })

The star rating component

Our single post template currently looks like this:

<?php /* single-post.php */ ?> <article class="recipe"> <?php /* ... post content */ ?>  </article>

We’ll register the star rating component and add some logic to manage it:

// main.js Vue.component('star-rating', { data () { return { rating: 0 } }, methods: { rate (i) { this.rating = i } }, watch: { rating (val) { // prevent rating from going out of bounds by checking it to on every change if (val < 0) this.rating = 0 else if (val > 5) this.rating = 5 // ... some logic to save to localStorage or somewhere else } } }) // make sure to initialize Vue after registering all components new Vue({ el: document.getElementById('site-wrapper') })

We’ll write the component template in a separate PHP file. The component will comprise six buttons (one for unrated, 5 with stars). Each button will contain an SVG with either a black or transparent fill.

<?php /* components/star-rating.php */ ?> <star-rating inline-template> <div class="star-rating"> <p>Rate recipe:</p> <button @click="rate(0)"> <svg><path d="..." :fill="rating === 0 ? 'black' : 'transparent'"></svg> </button> <button v-for="(i in 5) @click="rate(i)"> <svg><path d="..." :fill="rating >= i ? 'black' : 'transparent'"></svg> </button> </div> </star-rating>

As a rule of thumb, I like to give a component’s top element a class name that is identical to that of the component itself. This makes it easy to reason between markup and CSS (e.g. <star-rating> can be thought of as .star-rating).

And now we’ll include it in our page template.

<?php /* single-post.php */ ?> <article class="recipe"> <?php /* post content */ ?> <?php get_template_part('components/star-rating'); ?> </article>

All the HTML inside the template is valid and understood by the browser, except for <star-rating>. We can go the extra mile to fix that by using Vue’s is directive:

Now let’s say that the maximum rating isn’t necessarily 5, but is controllable by the website’s editor using Advanced Custom Fields, a popular WordPress plugin that adds custom fields for pages, posts and other WordPress content. All we need to do is inject that value as a prop of the component that we’ll call maxRating:

<?php // components/star-rating.php // max_rating is the name of the ACF field $max_rating = get_field('max_rating'); ?> <div is="star-rating" inline-template :max-rating="<?= $max_rating ?>"> <div class="star-rating"> <p>Rate recipe:</p> <button @click="rate(0)"> <svg><path d="..." :fill="rating === 0 ? 'black' : 'transparent'"></svg> </button> <button v-for="(i in maxRating) @click="rate(i)"> <svg><path d="..." :fill="rating >= i ? 'black' : 'transparent'"></svg> </button> </div> </div>

And in our script, let’s register the prop and replace the magic number 5:

// main.js Vue.component('star-rating', { props: { maxRating: { type: Number, default: 5 // highlight } }, data () { return { rating: 0 } }, methods: { rate (i) { this.rating = i } }, watch: { rating (val) { // prevent rating from going out of bounds by checking it to on every change if (val < 0) this.rating = 0 else if (val > maxRating) this.rating = maxRating // ... some logic to save to localStorage or somewhere else } } })

In order to save the rating of the specific recipe, we’ll need to pass in the ID of the post. Again, same idea:

<?php // components/star-rating.php $max_rating = get_field('max_rating'); $recipe_id = get_the_ID(); ?> <div is="star-rating" inline-template :max-rating="<?= $max_rating ?>" recipe-id="<?= $recipe_id ?>"> <div class="star-rating"> <p>Rate recipe:</p> <button @click="rate(0)"> <svg><path d="..." :fill="rating === 0 ? 'black' : 'transparent'"></svg> </button> <button v-for="(i in maxRating) @click="rate(i)"> <svg><path d="..." :fill="rating >= i ? 'black' : 'transparent'"></svg> </button> </div> </div>

// main.js Vue.component('star-rating', { props: { maxRating: { // Same as before }, recipeId: { type: String, required: true } }, // ... watch: { rating (val) { // Same as before // on every change, save to some storage // e.g. localStorage or posting to a WP comments endpoint someKindOfStorageDefinedElsewhere.save(this.recipeId, this.rating) } }, mounted () { this.rating = someKindOfStorageDefinedElsewhere.load(this.recipeId) } })

Now we can include the same component file in the archive page (a loop of posts), without any additional setup:

<?php // archive.php if (have_posts()): while ( have_posts()): the_post(); ?> <article class="recipe"> <?php // Excerpt, featured image, etc. then: get_template_part('components/star-rating'); ?> </article> <?php endwhile; endif; ?>

The feedback form

The moment a user rates a recipe is a great opportunity to ask for more feedback, so let’s add a little form that appears right after the rating is set.

// main.js Vue.component('feedback-form', { props: { recipeId: { type: String, required: true }, show: { type: Boolean, default: false } }, data () { return { name: '', subject: '' // ... other form fields } } })

<?php // components/feedback-form.php $recipe_id = get_the_ID(); ?> <div is="feedback-form" inline-template recipe-id="<?= $recipe_id ?>" v-if="showForm(recipe-id)"> <form class="recipe-feedback-form" id="feedback-form-<?= $recipe_id ?>"> <input type="text" :id="first-name-<?= $recipe_id ?>" v-model="name"> <label for="first-name-<?= $recipe_id ?>">Your name</label> <?php /* ... */ ?> </form> </div>

Notice that we’re appending a unique string (in this case, recipe-id) to each form element’s ID. This is to make sure they all have unique IDs, even if there are multiple copies of the form on the page.

So, where do we want this form to live? It needs to know the recipe’s rating so it knows it needs to open. We’re just building good ol’ components, so let’s use composition to place the form inside the <star-rating>:

If at this point you’re thinking, “We really should be composing both components into a single parent component that handles the rating state,” then please give yourself 10 points and wait patiently.

A small progressive enhancement we can add to make the form usable without JavaScript, is to give it the traditional PHP action and then override it in Vue. We’ll use @submit.prevent to prevent the original action, then run a submit method to send the form data in JavaScript.

<?php // components/feedback-form.php $recipe_id = get_the_ID(); ?> <div is="feedback-form" inline-template recipe-id="<?= $recipe_id ?>"> <form action="path/to/feedback-form-handler.php" @submit.prevent="submit" class="recipe-feedback-form" id="feedback-form-<?= $recipe_id ?>"> <input type="text" :id="first-name-<?= $recipe_id ?>" v-model="name"> <label for="first-name-<?= $recipe_id ?>">Your name</label>  </form> </div>

Then, assuming we want to use fetch, our submit method can be something like this:

// main.js Vue.component('feedback-form', { // Same as before methods: { submit () { const form = this.$el.querySelector('form') const URL = form.action const formData = new FormData(form) fetch(URL, {method: 'POST', body: formData}) .then(result => { ... }) .catch(error => { ... }) } } })

OK, so what do we want to do in .then and .catch? Let’s add a component that will show real-time feedback for the form’s submit status. First let’s add the state to track sending, success, and failure, and a computed property telling us if we’re pending results.

// main.js Vue.component('feedback-form', { // Same as before data () { return { name: '', subject: '' // ... other form fields sent: false, success: false, error: null } }, methods: { submit () { const form = this.$el.querySelector('form') const URL = form.action const formData = new FormData(form) fetch(URL, {method: 'POST', body: formData}) .then(result => { this.success = true }) .catch(error => { this.error = error }) this.sent = true } } })

To add the markup for each message type (success, failure, pending), we could make another component like the others we’ve built so far. But since these messages are meaningless when the server renders the page, we’re better off rendering them only when necessary. To do this we’re going to place our markup in a native HTML <template> tag, which doesn't render anything in the browser. Then we’ll reference it by id as our component’s template.

<?php /* components/form-status.php */ ?> <template id="form-status-component" v-if="false"> <div class="form-message-wrapper"> <div class="pending-message" v-if="pending"> <img src="<?= get_template_directory_uri() ?>/spinner.gif"> <p>Patience, young one.</p> </div> <div class="success-message" v-else-if="success"> <img src="<?= get_template_directory_uri() ?>/beer.gif"> <p>Huzzah!</p> </div> <div class="success-message" v-else-if="error"> <img src="<?= get_template_directory_uri() ?>/broken.gif"> <p>Ooh, boy. It would appear that: </p> </div> </div </template>

Why add v-if="false" at the top, you ask? It’s a tricky little thing. Once Vue picks up the HTML <template>, it will immediately think of it as a Vue <template> and render it. Unless, you guessed it, we tell Vue not to render it. A bit of a hack, but there you have it.

Since we only need this markup once on the page, we’ll include the PHP component in the footer.

<?php /* footer.php */ ?> </div>  <?php get_template_part('components/form-status'); ?> <?php wp_footer(); ?>

Now we’ll register the component with Vue…

// main.js Vue.component('form-status', { template: '#form-status-component' props: { pending: { type: Boolean, required: true }, success: { type: Boolean, required: true }, error: { type: [Object, null], required: true }, } })

…and call it inside our form component:

Since we registered <form-status> using Vue.component, it's available globally, without specifically including it in the parent’s components: { }.

Filtering recipes

Now that users can personalize some bits of their experience on our blog, we can add all kinds of useful functionality. Specifically, let's allow users to set a minimum rating they want to see, using an input at the top of the page. The first thing we need is some global state to track the minimum rating set by the user. Since we started off by initializing a Vue app on the whole page, global state will just be data on the Vue instance:

// main.js // Same as before new Vue({ el: document.getElementById('site-wrapper'), data: { minimumRating: 0 } })

And where can we put the controls to change this? Since the whole page is the app, the answer is almost anywhere. For instance, at the top of the archive page:

<?php /* archive.php */ ?> <label for="minimum-rating-input">Only show me recipes I've rated at or above:</label> <input type="number" id="minimum-rating-input" v-model="minimumRating"> <?php if (have_posts()): while ( have_posts()): the_post(); ?> <article class="recipe"> <?php /* Post excerpt, featured image, etc. */ ?> <?php get_template_part('components/star-rating'); ?> </article> <?php endwhile; endif; ?>

As long as it’s inside our site-wrapper and not inside another component, it’ll just work. If we want, we could also build a filtering component that would change the global state. And if we wanted to get all fancy, we could even add Vuex to the mix (since Vuex can’t persist state between pages by default, we could add something like vuex-persist to use localStorage).

So, now we need to hide or show a recipe based on the filter. To do this, we’ll need to wrap the recipe content in its own component, with a v-show directive. It’s probably best to use the same component for both the single page and the archive page. Unfortunately, neither require nor get_template_part can pass parameters into the called file — but we can use global variables:

<?php /* archive.php */ ?> <label for="minimum-rating-input">Only show me recipes I've rated at or above:</label> <input type="number" id="minimum-rating-input" v-model="minimumRating"> <?php $is_archive_item = true; if (have_posts()): while ( have_posts()): the_post(); get_template_part('components/recipe-content'); endwhile; endif; ?>

We can then use $is_archive_item as a global variable inside the PHP component file to check if it is set and true. Since we won’t need to hide the content on the single post page, we’ll conditionally add the v-show directive.

<?php // components/recipe-content.php global $is_archive_item; ?> <div is="recipe-content"> <article class="recipe" <?php if ($is_archive_item): ?> v-show="show" <?php endif; ?> > <?php if ($is_archive_item): the_excerpt(); else the_content(); endif; get_template_part('components/star-rating'); ?> </article> </div>

In this specific example, we could have also tested with is_archive() inside the component, but in most cases we’ll need to set explicit props.

We’ll need to move the rating state and logic up into the <recipe-content> component so it can know if it needs to hide itself. Inside <star-rating>, we’ll make a custom v-model by replacing rating with value, and this.rating = i with $emit('input', i) as well . So our component registration will now look like this:

// main.js Vue.component('recipe-content', { data () { rating: 0 }, watch: { rating (val) { // ... } }, mounted () { this.rating = someKindOfStorageDefinedElsewhere.load(this.recipeId) } }) Vue.component('star-rating', { props: { maxRating: { /* ... */ }, recipeId: { /* ... */ }, value: { type: Number, required: true } }, methods: { rate (i) { this.$emit('input', i) } }, })

We’ll add v-model in star-rating.php and change rating to value. In addition, we can now move the <feedback-form> up into <recipe-content>:

<?php // components/star-rating.php $max_rating = get_field('max_rating'); $recipe_id = get_the_ID(); ?> <div is="star-rating" inline-template :max-rating="<?= $ max_rating ?>" recipe-id="<?= $recipe_id ?>" v-model="value" > <div class="star-rating"> <p>Rate recipe:</p> <button @click="rate(0)"> <svg><path d="..." :fill="value === 0 ? 'black' : 'transparent'"></svg> </button> <button v-for="(i in maxRating) @click="rate(i)"> <svg><path d="..." :fill="value >= i ? 'black' : 'transparent'"></svg> </button> </div> </div>

Now everything is set up so the initial render shows all recipes, and then the user can filter them based on their rating. Moving forward, we could add all kinds of parameters to filter content. And it doesn’t have to be based on user input — we can allow filtering based on the content itself (e.g. number of ingredients or cooking time) by passing the data from PHP to Vue.

Conclusion

Well, that was a bit of a long ride, but look at what we’ve built: independent, composable, maintainable, interactive, progressively enhanced components in our WordPress theme. We brought together the best of all worlds!

I’ve been using this approach in production for a while now, and I love the way it allows me to reason about the different parts of my themes. I hope I’ve inspired you to try it out too.

Of course, two days before launch, the client’s legal department decided they don't want to collect all that info. Currently the live form is but a shadow of its development self.

Fun fact: Rasmus Lerdorf said that his original intent was for PHP to be templating only, with all business logic handled in C. Let that sink in for a moment. Then clear an hour from your schedule and watch the whole talk.

There are third-party WordPress templating engines that can compile down to optimized PHP. Twig, for example, comes to mind. We’re trying to go the reverse route and send vanilla PHP to be handled by JavaScript.

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