#Best NODE JS interview Questions
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#NODE JS Interview Question#NODE JS questions#NODE JS#NODE JS Questions For interview#Best NODE JS interview Questions#NODE JS interview Questions For Freshers#NODE JS interview questions for experienced#NODE JS mock test questions for freshers#NODE JS mock test questions for experienced#most common NODE JS interview questions#Top 20 NODE JS interview questions#Top 50 NODE JS interview questions
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#Repost @codinghousee
——
18 useful GitHub repositories every developer should bookmark
1. free-programming-books
A huge list of freely available programming books.
2. coding-interview-university
A complete computer science study plan to become a software engineer.
3. awesome
Awesome lists about all kinds of interesting topics.
4. developer-roadmap
Up-to-date roadmap to becoming a developer.
5. javascript-algorithms
Algorithms and data structures implemented in JavaScript with explanations and links.
6. node-best-practices
The Node.js best practices list.
7. tech-interview-handbook
Curated coding interview preparation materials for software engineers.
8. project-based-learning
A curated list of project-based tutorials.
9. 30-seconds-of-code
Short JavaScript code snippets for all your development needs.
10. free-for-dev
A list of SaaS, PaaS, and IaaS offerings that have free tiers.
11. javascript-questions
A long list of advanced JavaScript questions, and their explanations
12. design-resources-for-developers
A list of resources from stock photos, web templates, to frameworks, libraries, and tools.
13. app-ideas
A Collection of application ideas that can be used to improve your coding skills.
14. build-your-own-x
Master programming by recreating your favorite technologies from scratch.
15. real world
See how the exact same Medium clone is built using different frontends and backends.
16. Public - API's
A collective list of free APIs for use in software and web development.
17. system-design-primer
Learn how to design large-scale systems. Prep for the system design interview
18. the-art-of-command-line
Master the command line, all in one page.
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7 Technologies You Must Know As a Node js Developer
Are you a Node js Developer? Do you know the essential skills and traits you should know for the best development projects? If you are a recruiter hiring Node js Developers for your next project, this blog will guide you through the traits that every Node js Developer for hire should have!
Who are Node js Developers
The programmers that use the combination of JavaScript for front-end and Node js for server-side development are Node js Developers.
Characteristics of Node js
Free for use
Open source environment
It runs on numerous operating systems like Windows, Linux, Unix, etc.
7 Traits you should see before hiring Node js Developers
Knowledge of basics: Node js and JavaScript
Fron-end Development: Client Interface
Database Knowledge: SQL and No SQL Databases
Cloud and Cloud Platforms
Security: Crucial Security measures
Web application Frameworks: Program Structure and its importance
Source Code and Git: Code maintenance and editing
Types of Frameworks every Node js Developer for hire should know.
MVC
Full-Stack MVC
REST API
Interview Questions for Node js Developers
Interviews help in validating and evaluating candidate skills for hiring Node js Developers.
Face-to-face interaction becomes significant for analyzing the confidence, ability, and true understanding of knowledge to hire Node js Developers.
To Read this full blog, Check out this link -
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Everything you need to know about java certification
In the corporate world, industry-level certification plays an important role. It not only improvises the person's skills but also qualifies the person to stand out among the crowd. In several software domain places; java is one of the most prominent programming languages. If you are attaining the interview java certification adds value to your profile.
What is java programming?
Java is a high-level programming language that is developed by sun microsystems. Java programming language is not similar to other programming languages like C, C++ but a lot easier. Even you can compare Java with other technologies like node Js, Android, Spring, J2EEetc to form portable, scalable, robust, and distributed applications. Java also promotes continuous testing and integration tools like selenium. Here comes some of the reasons to get a java certification.
Hiring preference
Most IT companies are giving preference for candidates who possess java certification. The corporate field is expecting their employees to be a certified person. After completing the java training online, you can open to a lot of job opportunities and you can easily start your career in the competitive world.
Better salary
You are able to view the salary packages differences between the java developers and certified java professionals. The only reason behind it is a skillset, it gets increased while attaining java online training. Certain companies are hiring only certified java professionals for a particular job role.
Add value to your resume
A resume is a tool that elevates your skillset. If you own a java certification that adds significant value to it. If you’re holding a standard java certification then it is easy for you to apply in companies. At the time of interviews, the recruiter would prefer hiring the certified candidates so the certification gives more value to your resume.
Recognition in the team
Java certified employees are always given higher importance in the team. Positions the java certified professional takes are excessive compared to the other person individuals in the team. After completing the java certification, the person gains a higher skill set and knowledge. This certification helps the individual to enhance their connecting circles by obtaining value and recognition among the team.
Makes you a better programmer
The java certification will help you to increase the knowledge in the java programming language. Through this certification, you can obtain a better outcome in designing patterns, testing tools, clear coding skills, development processes, etc. Day by day you can be a better coder by completing the challenging tasks offered in the course.
Reimbursement form employer
Many companies are taking steps to help their employees to complete the certifications that can broaden their technical skills. It is providing success for both employees and organizations. Even the cost for the java course is paid by the companies along with the java certification cost as they want their employees to enhance their skills and certified employees would be able to uplift the organizational growth.
Increase the confidence level
By pursuing java training you can increase your confidence level hence you would know more about java concepts without any real-time java programming experience. While attaining an interview this confidence level will reflect in that situation. A certified person can easily undergo the interview process by answering all the questions even the complicated one with maximum efficiency and this makes the company hire you. Even if you can demand better offers from your company the java skill set they possessed will surely benefit them.
Career options for certified java programmers
Here comes some of the best career option available for certified Java professionals
DevOps engineer
The person who is interested in doing scripting and coding can move into the development side where they perform the testing process. This means the certified individual you have a passion for managing the environment, improvises the overall programming structure and can be a DevOps engineer.
Scrum master
The main function of the scrum master is organizing the scrum meeting and solving all the blocker that arises before them. Scrum master requires a little bit of coordination and project managing skills. The scrum master job is similar to business analysts. But the demand is higher among companies. By attaining java certification programs, you have a higher chance to improve your scrum skills.
Project manager
The project manager plays a major role in maintaining the day-to-day projects and must also be capable of managing the six aspects of the projects such as quality, resource, scope, schedule, finance, and risk. The work of the project manager is to budget, plan, oversee, and document all the projects. If you are struggling to handle the projects in the role of project managers then train yourself in a java course where you will get skilled in hook and corner during the course training.
Solution architect
The solution architect's main job is to create one or more applications and services within a company. Typically, the solution architect is part of the solution development team. They need to enhance their skill set in both the business and technical side and often they work as a strategic director for enterprise artifacts. The job of a solution architect is to transform the functional architect work into an architecture solution and they describe their work in architecture and design artifacts. To be a professional solution architect, you need to be well versed in data structure and algorithms as well as in design patterns and system designs.
Business analysts
Business analysts are involved in the work process of the business or IT industry. Business analysts, the main job is to interact with the stakeholders and understand their needs and problems regarding the projects. The analysts gather information and work on the business needs and requirements. If you are new to the field then join in java training where you can elevate your business analyst skills.
Bottom-line
The above reasons show the importance of pursuing the java certification program. If you are looking for IT jobs then start your career by holding standardized java certification. it will take you to a higher position.
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A lot of questions for JavaScript developers
#492 — June 12, 2020
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JavaScript Weekly
153 JavaScript Questions (With Their Answers Explained) — Want to test your JavaScript knowledge? Whether for fun or a job interview, this is an interesting set of questions, complete with explanations of the answers. We first linked to this a year ago when it only had about 40 questions, so it’s grown a lot!
Lydia Hallie
An ECMAScript Proposal: Logical Assignment Operators — Dr. Axel covers another proposal in the pipeline for the language that would let us do things like a ||= b or a &&= b as you might in, say, Ruby or Perl.
Dr. Axel Rauschmayer
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Frontend Masters sponsor
Node Weekly: Our Sister Newsletter for Node Developers — Earlier this week I was speaking with a long time JavaScript Weekly subscriber who hadn’t heard of Node Weekly, our Node-focused weekly newsletter, so I thought I should invite you all to check out the latest issue as we cover a lot of Node things there that we don’t include in JSW :-) Be sure to check out the “7 Interesting Node Modules and Tools” section at the bottom!
Cooperpress
⚡️ Quick bytes:
JSGrids is a handy compilation of the best spreadsheet and data grid libraries so you can compare and pick the right one for you.
VS Code May 2020 has been released with a preview of editor setting syncing between multiple machines, CommonJS auto imports, preserved newlines during JS/TS refactorings, and more.
Excited for Vue 3? There's now an 'awesome' list for Vue 3 resources, links, videos, etc.
MDN has introduced a new front-end development learning pathway to add an opinionated and curated set of tutorials to guide you through learning things like CSS and JavaScript.
There's a JavaScript game you can play in your browser's title bar. Yes, it's open source.
💻 Jobs
JavaScript Developer at X-Team (Remote) — Join X-Team and work on projects for companies like Riot Games, FOX, Coinbase, and more. Work from anywhere.
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Find A Job Through Vettery — Vettery specializes in tech roles and is completely free for job seekers. Create a profile to get started.
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📚 Tutorials, Opinions and Stories
An Old School Doom Clone (in 13KB of JavaScript) — I have no idea how we missed this last year, but wow, what a neat piece of work. You can even grab it and play with the code yourself.
Nicholas Carlini
Type Assertions in TypeScript — A way to temporarily override a type, a little like lightweight casting.
Dr. Axel Rauschmayer
How to Deploy a Gridsome App on Azure Static Web Apps — Brings together the Gridsome Vue.js site generator with Azure’s new static app deployment service.
Gift Egwuenu
Bitmovin Magazine 5th Edition: Shaping the Future of Video — Get the latest overview of our products, recent feature releases, current video trends, and customer case studies.
Bitmovin Inc. sponsor
Using Higher-Order Components in React — Learn about higher-order components, the syntax of higher-order components, as well as use cases for them.
Shedrack Akintayo
How to Compare Objects in JavaScript — Compares a few different levels of what ‘equality’ actually is when it comes to JS objects.
Dmitri Pavlutin
Svelte, Why So Much Hype? — A closer look at the component-based library.
Anthony Le Goas
Improving the Rendering Performance of a Large List View in AngularJS 1.2.22 — You’re probably not doing this, but this is a pretty neat look at approaching performance issues in legacy apps.
Ben Nadel
🔧 Code & Tools
njt (npm jump to): A Quick Navigation Tool for npm Packages — njt is a tool you can either use locally (npm install njt first) or on the Web site and it acts as a way to quickly reach a package’s issues, homepage, pull request, and numerous other things. Clever idea.
Alexander Kachkaev
Math.js 7.0: An Extensive Math Library for Node.js and Browser — Work with complex numbers, fractions, units, matrices, symbolic computation, etc.
Jos de Jong
Stream Chat API & JavaScript SDK for Custom Chat Apps — Build real-time chat in less time. Rapidly ship in-app messaging with our highly reliable chat infrastructure.
Stream sponsor
Quotebacks: Embed Quotes Without Losing Context — This is a small library that can embed a quote in an attractive format within the source context. Can also be used as a Chrome extension that saves to local storage.
Tom Critchlow and Toby Shorin
Johnny Five 2.0: A JavaScript Robotics and IoT Programming Framework — If you’d wondered why you haven’t seen much about Johnny Five lately, don’t fear, because… Five is Alive! v2.0 is primarily an internal rewrite release rather than boasting lots of new features, though.
Rick Waldron
Karma 5: A Multiple Real Browser Test Runner for JavaScript — A popular way to test your code in multiple, real browsers at once. GitHub repo.
Karma
React Date Picker 3.0: A Simple and Reusable Date-Picker Component — A mature option that continues to get frequent updates. Demo here.
HackerOne
ModJS: A JavaScript Module for KeyDB and Redis — This isn’t for using Redis (or the KeyDB fork) from JavaScript but for taking JavaScript into the popular data structure server in case you prefer JavaScript to Lua for scripting it.
John Sully
Getting Started With OpenTelemetry In Node.js
Lightstep sponsor
Lightweight Charts 3.0: Canvas-Powered Financial Charts
TradingView, Inc.
tsParticles v1.15.0: A TypeScript Library for Particle Effects — Lots of neat demos in this announcement post. It’s basically Particles.js, but ported to TypeScript. GitHub repo.
Matteo Bruni
Josh.js: A Library to Animate Content on Page Scroll — This effect feels a little overdone nowadays, but this library is small, efficient, and it feels performant to me too.
Al Mamun
SVGuitar: Create SVG-Based Guitar Chord Charts — Very flexible and customizable and you can have a hand-drawn effect as well.
Raphael Voellmy
🗓 Upcoming Online Events
JS Nation (June 18-19) — This free two-day remote conference features over 25 speakers, including Jen Looper, Max Stoiber, John Papa and others.
OpenJS World (June 23-24) — Speakers at this 'virtual experience' include Nicole Sullivan, Prosper Otemuyiwa, Cassidy Williams and more.
CascadiaJS 2020 (September 1-2) — This upcoming online conference is set to take place in September.
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Node JS: Advanced Concepts
Get advanced with Node.Js! Learn caching with Redis, speed up through clustering, and add image upload with S3 and Node!
What Will I Learn?
Absolutely master the Event Loop and understand each of its stages
Utilize Worker Threads and Clustering to dramatically improve the performance of Node servers
Speed up database queries with caching for MongoDB backed by Redis
Add automated browser testing to your Node server, complete with continuous integration pipeline setup
Apply scalable image and file upload to your app, utilizing AWS S3
READ ALSO :
Learn Flutter & Dart to Build iOS & Android Apps [2020]
Blockchain and Bitcoin Fundamentals
Requirements
Basic knowledge of Node, Express, and MongoDB
Strong knowledge of Javascript
Description
Go beyond the basics of Node! This course will give you the skills needed to become a top Node engineer. Query Caching with Redis? You will learn it. The Node Event Loop? Included. Scalable File Upload? Of course! This is a must-take course if you work with Node. Node Internals: Here’s one of the most common interview questions you’ll face when looking for a Node job: “Can you explain the Node’s Event Loop?” There are two types of engineers: those who can describe the Event Loop and those who cannot! This course will ensure that you are incredibly well prepared to answer that most important question. Besides being critical for interviews, knowledge of the Event Loop will give you a better understanding of how Node works internally. Many engineers know not to ‘block’ the Event Loop, but they don’t necessarily understand why. You will be one of the engineers who can clearly articulate the performance profile of the Node and its Event Loop.
Caching with Redis:
We’ll also supercharge the performance of database queries by implementing caching backed by Redis. No previous experience with Redis is required! Redis is an in-memory data store purpose-built for solving caching needs. By adding caching to your application, you can decrease the amount of time that any given request takes, improving the overall response time of your app.
File Upload:
There are many resources online that offer suggestions on how to handle file upload, but few show a solution that can truly scale. Hint: saving files directly on your server isn’t a scalable solution! Learn how to leverage AWS S3 to implement file upload that can scale to millions of users with a few dozen lines of simple code. Plentiful discussions are included on security concerns with handling uploads, as well.
Continuous Integration Testing:
This is a must-have feature for any serious production app. We’ll first learn how to test huge swaths of our codebase with just a few lines of code by using Puppeteer and Jest. After writing many effective tests, we’ll enable continuous integration on Travis CI, a popular – and free – CI platform. Testing can sometimes be boring, so we’ll use this section to brush up on some advanced Javascript techniques, including one of the only legitimate uses of ES2015 Proxies that you’ll ever see!
Here’s what we’ll learn:
Master the Node Event Loop – understand how Node executes your source code.
Understand the purpose of Node, and how the code you write is eventually executed by C++ code in the V8 engine
Add a huge boost to performance in your Node app through clustering and worker threads
Turbocharge MongoDB queries by adding query caching backed by a lightning-fast Redis instance
Scale your app to infinity with image and file upload backed by Amazon’s S3 file service
Implement a continuous integration testing pipeline so you always know your project functions properly
Think you know everything there is about managing cookies and session? Well, you might, but learn even more!
Ensure your app works the way you expect with automated browser testing using Jest and Puppeteer
Bonus – learn advanced JS techniques along the way, including where to use ES2015 proxies!
I’ve built the course that I would have wanted to take when I was learning to Node. A course that explains the concepts and how they’re implemented in the best order for you to learn and deeply understand them.
Who is the target audience?
Anyone who wants a deep mastery of Node
Engineers looking to understand the internals of Node
Programmers looking to improve Node’s performance
Created by Stephen Grider Last updated 3/2020 English English [Auto-generated] Size: 1.76 GB
DOWNLOAD COURSE
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UI Full Stack developer
Job Title: UI Full Stack developer Location: Fort Worth, TX Duration: 12+Months Interview Type: Skype Job Description: Need strong experience in Angular 2, Node JS HTML5,CSS,JavaScript,Angular, JQuery ,React Within the last 3 years, have had 2+ years delivered internal/external corporate SPA web applications working as a full-stack developer which include at least two of the following technologies: AngularJS, Node.js, and Couchbase (or another No-SQL database) Can demonstrate subject matter expert level knowledge of at least one of the technologies above, which means difficult questions arising around said technology can be discussed fluidly, authoritatively, and accurately by the candidate Bachelors or Master?s Degree in Petroleum, Chemical, Computer Science, or Electrical Engineering with 3+ years of rigorous software development experience Experience in developing unit tests with frameworks such as Jasmine, Karma. Must have excellent English written and verbal communications skills, and has experience regularly communicating with her/his team Works well in teams and independently, manages time well and makes quality decisions. Works well in teams, focuses well on sprint plans, but able to pivot and swarm as often as needed to help the team meet sprint goals Experience developing, deploying, maintaining applications following the Microservices architectural pattern Experience with TDD or BDD development Experience working with Hadoop and BI in a PaaS environment Experience with Python development Experience with Linux development Experience with AWS development Experience with Bootstrap customization Experience with Docker or Kubernetes Experience in using source control systems such as Git, TFS, Subversion. Active participant in software development community with keen interest in the latest best software practices and trends. Demonstrated ability to conform to programming standards and release protocol Reference : UI Full Stack developer jobs Source: http://jobrealtime.com/jobs/technology/ui-full-stack-developer_i5834
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9 Tips For Landing Your First Digital Marketing Job
Digital Marketing- The newest trend in the job market.
In these competitive times in the job market, digital marketing seems to be a glorious option for career enhancement for many, especially for the students. Digital marketing has recently been in a lot of discussions worldwide. It is considered to be the new pathway for business organizations that will blossom your business comprehensively.
In recent times everything we can think of is online. So taking business and marketing to the web is the most tactical way which can be proved to be profitable in many ways. The major key to digital marketing is social media marketing. You can target your desired clients by advertising your brand through social media platforms. It's a huge evolution of marketing strategies. And over the years it has been proved to be beneficiary for a number of businesses. The most important benefit of it is that even you are new to the business industry you can pull through a lot of strings for your brand by advertising it online
The scope of digital marketing for career opportunities:
Now here the question may arise what really is the future of digital marketing? Are we at a saturation point? The answer to this is pretty simple how we can beat a saturation point when we all know that our time to raise is heavily invested in digital. We consume more on digital than in the real world. In India, there are about 500 million internet users. Similarly, in any other country, there is an increase in usage of the internet and this is growing with a very rapid speed. But campaigns like Digital India and Jio internet services, digital has reached out to the rural and urban areas at a faster pace in the last two years. All together its 22 percent growth in usage of internet in rural India and about 7 percent in urban. Remember 55 percent of Indians haven't used the internet yet. As they start adapting to the internet the processes will become more digital and there would be increasing demand for digital marketer.
Job Openings in Digital Marketing filed:
There have been thousands for job openings in digital marketing and this is with respect to the keyword digital marketing itself. If you look at SEO, SEM there is a lot of potential job openings up there on these platforms. If you search for social media or SEO you can find a lot more openings up there. Let's take two references:
Naukri.com has about 13,000 job openings in the digital marketing domain.
LinkedIn has close to about 5,000 job openings in digital marketing.
Read more: 9 Highest Paid Digital Marketing Skills in Demand [You Can't-Miss it]
Landing your first digital marketing job
Knowing what aspect of digital marketing you need to learn and evaluate your skills accordingly.
Look for potential job fields, which includes SEO, SEM. These fields have a lot of potential job openings.
Look for the potential platforms that are offering a huge amount of openings. For instance, naukri.com, LinkedIn, etc.
Now before starting with your job you first need to evaluate which field of digital marketing you are most suited, then go for that field. The specific fields are mentioned below int consecutive points.
Process Oriented: If you think you are not a creative person and not creative genie, the industry still demands people who can drive great leads advertisements. You can definitely opt for a process-oriented digital field. This is the field where you need to do SEO, SEM, Google Analytics, Automation, Digital advertising and tasks that don't require great content synergy.
Creative Content Oriented: If you are a creative person or you love to visualize, then this role suits you the best. Your role demands you to come up with content strategy, campaign ideas, unique Hashtag proposition, creative for digital advertisements, etc.
Management Oriented: People who have been in the marketing industry for years and want to make a career shift in digital and would like to get into a mid-manager role or managerial role in the domain of digital like client service head, account manager, etc. can opt for this field. Even this field can be taken up by students if they are interested in marketing fields.
Technology Oriented: These are those silent guys in the digital domain who are responsible for doing some APIs and so some tech-based marketing innovations. They are coders, API developers, etc. so if you are into coding and developing this field is your option to go with.
Figure out which field of digital marketing is most suited for you and choose accordingly before looking for a job.
Certification in digital marketing is that the most trending buzz happening within the market. Employers of high international companies are searching for certified professionals and they say- certification is that the key to getting employed. the number says 90th of hiring managers consider certification as prime hiring criteria.
To get skilled in an advanced digital marketing course, So many institutes offer inclusive Digital Marketing Course in Jaipur for graduates, business owners, and etc., over theory, it's offering practical session and tools training by industry specialists. At the side of internet marketing training, the institute helps its students to get placed in top MNCs by giving 100% job placement assistance, training material, and digital marketing certification.
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Get advanced with Node.Js! Learn caching with Redis, speed up through clustering, and add image upload with S3 and Node!
What you’ll learn
Absolutely master the Event Loop and understand each of its stages
Utilize Worker Threads and Clustering to dramatically improve the performance of Node servers
Speed up database queries with caching for MongoDB backed by Redis
Add automated browser testing to your Node server, complete with continuous integration pipeline setup
Apply scalable image and file upload to your app, utilizing AWS S3
Requirements
Basic knowledge of Node, Express, and MongoDB
Strong knowledge of Javascript
Description
Go beyond the basics of Node! This course will give you the skills needed to become a top Node engineer.
Query Caching with Redis? You will learn it. The Node Event Loop? Included. Scalable File Upload? Of course!
——————————
This is a must-take course if you work with Node.
Node Internals: Here’s one of the most common interview questions you’ll face when looking for a Node job: “Can you explain Node’s Event Loop?” There are two types of engineers: those who can describe the Event Loop and those who cannot! This course will ensure that you are incredibly well prepared to answer that most important question. Besides being critical for interviews, knowledge of the Event Loop will give you a better understanding of how Node works internally. Many engineers know not to ‘block’ the Event Loop, but they don’t necessarily understand why. You will be one of the engineers who can clearly articulate the performance profile of Node and its Event Loop.
Caching with Redis: We’ll also supercharge the performance of database queries by implementing caching backed by Redis. No previous experience of Redis is required! Redis is an in-memory data store purpose built for solving caching needs. By adding caching to your application, you can decrease the amount of time that any given request takes, improving the overall response time of your app.
File Upload: There are many resources online that offer suggestions on how to handle file upload, but few show a solution that can truly scale. Hint: saving files directly on your server isn’t a scalable solution! Learn how to leverage AWS S3 to implement file upload that can scale to millions of users with a few dozen lines of simple code. Plentiful discussions are included on security concerns with handling uploads, as well.
Continuous Integration Testing: This is a must have feature for any serious production app. We’ll first learn how to test huge swaths of our codebase with just a few lines of code by using Puppeteer and Jest. After writing many effective tests, we’ll enable continuous integration on Travis CI, a popular – and free – CI platform. Testing can sometimes be boring, so we’ll use this section to brush up on some advanced Javascript techniques, including one of the only legitimate uses of ES2015 Proxies that you’ll ever see!
——————————
Here’s what we’ll learn:
Master the Node Event Loop – understand how Node executes your source code.
Understand the purpose of Node, and how the code you write is eventually executed by C++ code in the V8 engine
Add a huge boost to performance in your Node app through clustering and worker threads
Turbocharge MongoDB queries by adding query caching backed by a lightning-fast Redis instance
Scale your app to infinity with image and file upload backed by Amazon’s S3 file service
Implement a continuous integration testing pipeline so you always know your project functions properly
Think you know everything there is about managing cookies and session? Well, you might, but learn even more!
Ensure your app works the way you expect with automated browser testing using Jest and Puppeteer
Bonus – learn advanced JS techniques along the way, including where to use ES2015 proxies!
I’ve built the course that I would have wanted to take when I was learning to Node. A course that explains the concepts and how they’re implemented in the best order for you to learn and deeply understand them.
Who this course is for:
Anyone who wants a deep mastery of Node
Engineers looking to understand the internals of Node
Programmers looking to improve Node’s performance
Created by Stephen Grider Last updated 4/2018 English English [Auto-generated]
Size: 1.76 GB
Download Now
https://ift.tt/2H2TpzP.
The post Node JS: Advanced Concepts appeared first on Free Course Lab.
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Best interview questions for Technical Pogramming
A technical interview is used to assess candidates for specialist positions in IT, engineering,and science. They have the best interview questions that are specific to the role you have implemented so that the employer can confirm that you have the requisite skills.
Therefore, it is necessary to clear the technical round to make the interview successful. You can use these technical interview questions for freshers and experienced to prepare yourself for the interview process.
Companies interviewers have their own separate technical questions and skills for requirements. So, here are some Best Interview questions according to their categories that can be asked in the interview for Technical Jobs.
Here is the collections of Top Programming Languages Technical Interview Questions and Answers.
PHP Interview Questions
What is PHP? Why it is used?
What is the latest version of PHP and Mysql?
What is the difference between php 7 and php 5?
What is the role of the .htaccess file in php?
How to make database connection in PHP?
Java Interview Questions
Explain the features of Java?
What is Network Programming in java?
What is an anonymous class in Java?
What is the difference between Java'sHashMap and HashTable?
What is "this" keyword in java? Explain
Node JS Interview Questions
1. What are the uses of NPM in node js?
2. What is a callback in Node.js?
3. How we can secure HTTP cookies against XSS attacks?
4. What are the differences between synchronous and asynchronous methods of the fs module?
5. What are the exit codes in Node.js? Can you list a few exit codes?
Python Interview Questions
1. What is the difference between list and tuples?
2. What is pickling and unpickling?
3. What are the rules for global and local variables in Python?
4. What is pass in Python? What are the differences between pass and continue?
5. Explain what is a Flask? What are its benefits?
C Programming Interview Questions
What is C language & why it is used?
Why are algorithms important in C program?
Why is C called "mother" language?
What is pointer & why it is used?
What is recursion in C language?
C++ Best Interview Questions
What is c++& why it is used?
Explain the difference between C & C++?
What is a storage class used in C++?
What are the member functions used in C++?
What is namespace & why it is used in C++?
Data Structure Interview Questions
What do you mean by the graph?
What do you mean by Fibonacci search?
What is Huffman’s algorithm? Explain
What are the uses of data structures?
Explain the difference between PUSH and POP?
Testing Interview Questions
What are the Advantages of Manual Testing and Automated Testing?
What is Selenium?
What is the difference between Static and Dynamic Testing?
How do select Best automation testing tool for you?
Define some of the attributes of a test case?
DBMS Best Interview Questions
What is Database management system(DBMS) and why it is used?
What is Normalization and why it is used?
What is BCNF standard form in DBMS?
What is a concurrency problem in DBMS?
What is acid property in DBMS?
ASP.net Interview Questions
Explain the difference between ASP & ASP.NET.
Explain cashing in ASP.NET.
What are the cookies types in ASP.NET?
What is role-based security in ASP.NET?
Explain the ASP.NET session state modes.
This is a list of Technical interview questions. So, that is how I think anyone needs to prepare these questions to easily crack down Technical Interviews.
Note:
If you are interested in learning the Best Interview Questions for your Technical Interview. We have specially selected interview questions and answers to improve your knowledge. Visit our Website today and complete your next Technical Interview successfully.
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Angular 5 Training in bangalore
Angular 2 Training in bangalore
Best AngularJS 2,4,5,6, Training Institute In Banglore
Attend 4 Days Free Classes,40 Hours Course Duration,HTML 4,HTML 5,CSS3,Bootstrap,Javascript,Angular JS 1,2,4,5,6,7,Weekend and Weekdays Classes Available,8 Years Industries Experienced Trainer.
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Infocampus Best Angular 2,4,5,6, Training Institute In Banglore
AngularJS is a Javascript MVC system that gives you a chance to fabricate well structures,easily testable, and viable front-end applications.AngularJS is an auxiliary structure for dynamic web applications.
We will furnish ongoing undertaking preparing with code clarification and implementation.Our preparing modules are totally planned by current IT showcase.
After completion of 55% of course,student will go through Major Project Training,Interview Preparation and Recruitment process in IT Industry.
Angular 5 Training in Bangalore
AngularJS Training in Banglore Angular js Course Content/syllabus
1)Introduction to Angular.JS
Difference between Angular and Other JQuery Frameworks -knockout,Backbone,ember and Node
2)Angular Architecture
Making Boundries utilizing ng-application information Binding - one way official and two way authoritative.
3)Angular.js Building Blocks
View Component,Angular JS Scopes,Controller Component,Directives,Filters,Services
4)Understanding Server Communication
Communicating through $http PUT,POST,GET,PATCH
5)Angular Localization
Building Syntax using Localization,Creating JSON File for Localization,JSON Conversion,Understanding HTTP Headers,Understanding Catching Responses.
6)Testing your Angular Application
Testing using Jasmine and Testing using Karma Building your own custom Filters.Understanding Services Injecting Concepts.
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[Full-time] UI Full Stack developer at joseph_edla
Location: Texas URL: http://www.jobisite.com Description: Job Title: UI Full Stack developer Location: Fort Worth, TX Duration: 12+Months Interview Type: Skype Job Description: Need strong experience in Angular 2, Node JS HTML5,CSS,JavaScript,Angular, JQuery ,React Within the last 3 years, have had 2+ years delivered internal/external corporate SPA web applications working as a full-stack developer which include at least two of the following technologies: AngularJS, Node.js, and Couchbase (or another No-SQL database) Can demonstrate subject matter expert level knowledge of at least one of the technologies above, which means difficult questions arising around said technology can be discussed fluidly, authoritatively, and accurately by the candidate Bachelors or Master?s Degree in Petroleum, Chemical, Computer Science, or Electrical Engineering with 3+ years of rigorous software development experience Experience in developing unit tests with frameworks such as Jasmine, Karma. Must have excellent English written and verbal communications skills, and has experience regularly communicating with her/his team Works well in teams and independently, manages time well and makes quality decisions. Works well in teams, focuses well on sprint plans, but able to pivot and swarm as often as needed to help the team meet sprint goals Experience developing, deploying, maintaining applications following the Microservices architectural pattern Experience with TDD or BDD development Experience working with Hadoop and BI in a PaaS environment Experience with Python development Experience with Linux development Experience with AWS development Experience with Bootstrap customization Experience with Docker or Kubernetes Experience in using source control systems such as Git, TFS, Subversion. Active participant in software development community with keen interest in the latest best software practices and trends. Demonstrated ability to conform to programming standards and release protocol Reference : UI Full Stack developer jobs Apply to this job from employment-usa.net http://www.employment-usa.net/job/22731/ui-full-stack-developer-at-joseph_edla/
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November 24, 2018
News and Links
Layer 1
[Eth 2.0] What's New in Eth2
[Eth 2.0] Notes from last Eth 2.0 implementer call
[Eth 2.0] Beacon chain explainer
[Eth 1.x] Casey Detrio: a half-backed Ethereum 1.x roadmap. See also Martin Köppelmann’s tweetstorm if you prefer a quicker but not as thorough version.
[ewasm] Latest ewasm call with walkthrough of testnet setup and deploying code
[wasm] Fransham: why WASM vs EVM
“The bomb” will be different than last time. We’ll start seeing a spike in block time in mid-Jan if the fork hasn’t been implemented
Layer 2
This map of Plasma��is very cool, so is the associated writeup
Short RSA exclusion proofs for Plasma Prime
Game channels from DAO Casinos: state channels with randomness paper, a la FunFair’s Fate Channels
Raiden v0.17
POANetwork’s ERC20 to ERC20 bridge.
BLS DAG sidechain idea
Kauri’s dive into how to use sidechains
SNARK based Side-Chain for ERC20 tokens
Stuff for developers
Waffle: a testing framework based on ethers.js and mocha
Meadow: dev and testing framework written in cross-platform C# with .NET Core
web3 React: build single-page dapps in React with hooks
More on Parity’s light.js for building dapps on a light client
CryptoZombies lesson #9: ERC721x
Yakindu Solidity language server - all the IDEs
Kyber trading API
Kyokan’s chaind: caching layer in front of any Ethereum JSON-RPC endpoint
OneClickDapp: “instantly build a dApp with a simple URL to bookmark or share with a friend.”
Austin Griffith’s sandbox for playing with MolochDAO
How to query Ether supply in BigQuery and plot the number of Ethereum addresses
Getting started with Eventeum
Truffle v5.0.0-beta.2 - Solidity v0.5, Vyper support, and update to Web3.js 1.0.0-beta.36
Samuel Furter: my first 3 months maintaining web3.js
How to use Mythril Classic to find bugs
LevelK discovers a potential exploit of exchanges if they were not using best practices. If exchanges fail to put a gas limit on contract calls, then that enables an attacker to drain an exchange’s hot wallet, or potentially use GasToken to profit.
Panvala’s token grants for making Ethereum safer will start in the next 2 months.
AirSwap’s Keyspace: e2e encrypted messages with Ethereum and IPFS
Palladino: the transparent proxy pattern in Zeppelin
Ecosystem
MetaMask’s Mustekala light client that also shares pieces of the chain over libp2p
VIPNode releases a demo to incentivize full nodes serving light clients.
An overview of the Gnosis Safe’s features
Security considerations for Shamir’s secret sharing in Dark Crystals
A working proposal for permanent ENS register and why there will not be Harberger taxes in ENS
Safe zero confirmation payments in Ethereum (by using a bond)
The mission and practices of Ethereum Magicians
Stureby POW testnet to test Constantinople changes and how to help test.
Görli testnet explorer and their bounties initiative
Client-related
Pantheon v0.8.2
Trinity v0.1.0-alpha.17
EthereumJS VM v2.5.0: Constantinople fork ready, full consensus, StateManager
Enterprise
Pantheon video tutorial: start a private blockchain in Java with Docker
Governance and Standards
Latest core devs call. Here are the notes.
Also, the notes from the Devcon meetings that were discussed on the core devs call. Sometimes there are private meetings, Parity CTO Fred Harrysson summed it up well.
Ethereum Dispute Resolution Alliance, joint work on research and standards by Bounties Network, Aragon, and ENS
ERC820 pseudo-introspection registry in last call
ERC875 better NFTs to last call
ERC1592: Address and ERC20-compliant transfer rules
ERC1616: Attribute registry standard
ERC1621: Referral interface
ERC1620: Money streaming continuous payments over time
EIP1601: only full blocks get full mining reward
Project Updates
Golem graphene-ng demo and how to make SGX usable in decentralized scenarios
Aragon: the future of organizations and their first governance proposal passed with 99.97%
Status v0.9.31 - includes eip1102 for better privacy
AXA's Fizzy flight delay insurance expands to cover 80% of all flights
Melon supply: burning 248k now, may do another competition with ~70k already minted. 300k to be printed annually, but fees paid in Eth will buy and burn Melon.
Interviews, Podcasts, Videos, Talks
Maker’s Martin Lundfall on Smartest Contract
Prysmatic’s Preston Van Loon on Penn Blockchain podcast
Latest Open Block Explorers community call
DeFi Summit videos in Prague
First Görli testnet contributors call
Scuttlebutt’s Dominic Tarr with Arthur Falls
I missed this from web3summit: Jeff Burdges and Robert Kiel on mixnet instead of Whisper
Vlad and Gav debate governance on Zero Knowledge
Tokens / Business / Regulation
Neufund is doing their equity token offering on December 8th (whitelisting opens Nov 27th) but regulators forced them to raise the minimum to 100k euros. Interesting tweetstorm commentary.
Personal Token Economics with your own bonding curve
A bonding curve to decentralize how apps get listed in Status
Automatically roll one-week long/short contracts from Daxia (formerly DDA) using SetProtocol
[Between Apple, Facebook, Nasdaq, Ethereum and Bitcoin], “Ethereum feels like the easiest one to make a bull case for right now." - Fred Wilson
Fundamental questions to ask yourself about blockchain investing. I wrote this.
General
You can now buy Mastering Ethereum by Andreas Antonopoulos and Gavin Wood
Newsweek does an Ethereum profile
Bakkt moves launch data target to Jan 24th
EOS: an architectural and economic analysis. Apparently under real world conditions, EOS doesn’t do more transactions per second than Ethereum despite a large compromise on decentralization
There were widespread reports that a game with tradeable Ethereum NFTs had passed Sony review for the PS4, but I’m skeptical of anything I only find in crypto media.
IMF paper on central bank digital currencies
Overstock said it would sell the retail business to focus on blockchain/TZero security token exchange. The stock went up ~25%.
Dates of Note
Upcoming dates of note (new additions in bold):
Dec 7-9 - ETHSingapore hackathon (ETHGlobal)
Jan 10 - Mobi Grand Challenge hackathon ends
Jan 29-30 - AraCon (Berlin)
Feb 7-8 - Melonport’s M1 conf (Zug)
Feb 15-17 - ETHDenver hackathon (ETHGlobal)
Feb 23-25 - EthAustin hackathon (EthUniversal)
Mar 5-7 - EthCC (Paris)
Mar 27 - Infura end of legacy key support (Jan 23 begins Project ID prioritization)
If you appreciate this newsletter, thank ConsenSys
This newsletter is made possible by ConsenSys, which is perpetually hiring if you’re interested.
I own Week In Ethereum. As such, editorial control has always been 100% me. If you're unhappy with editorial decisions or anything that I have written in this issue, feel free to tweet at me.
Housekeeping and shilling
My friend and former boss Tim Raybould launched Stoop, an Android/iOSapp dedicated to newsletters like Anchor is to podcasts. It gives a dedicated email and clean design experience to read newsletters. I’ve only heard great feedback so far, so I want to shill his app.
I set a goal to grow the subscriber base of this newsletter to 10000 by the end of the year. It’s at 7900 now. That goal might’ve been ambitious. Need more people to double subscribe with Stoop so I can hit my vanity metric.
Link: http://www.weekinethereum.com/post/180462051998/november-24-2018
Most of what I link to I tweet first: @evan_van_ness
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What it takes to maintain a large open source project
#475 — February 14, 2020
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An oddly quiet week in terms of big, timely news, but yet again there's so much generally going on that I think we've got a good issue here :-) Till next week!
JavaScript Weekly
FullCalendar: A Full Sized JavaScript Calendar Control — An interesting option if you want a Google Calendar style control for your own apps. Has connectors for React, Vue and Angular. The base version is MIT licensed, but there’s a ‘premium’ version too.
Adam Shaw
How to Make a WebGL-Powered US Counties Map with D3 and Three.js — Creating a simple SVG-based map is one thing, but if you want the best performance, leaning on WebGL and your GPU is a good option. This tutorial covers how to approach moving from SVG to WebGL by way of Three.js.
Mika Iriarte
New: Our 'Most Loved' JavaScript Course 🧡 Gets Updated — Take your JavaScript to the next level. Gain an understanding of callbacks, higher order functions, closure, asynchronous and object-oriented JavaScript.
Frontend Masters sponsor
On the Maintenance of Large Open-Source Projects — A written-up group chat with former Node core team member Bert Belder (of libuv fame) and Leaflet creator Vladimir Agafonkin about what it takes to maintain large open source projects.
Anne-Laure Civeyrac
Tiny Helpers: Single Purpose Online Tools for Web Developers — A growing collection of single-purpose online tools aimed at developers of all types. Covers things like base64 conversion, color management, favicon generators, exploring JavaScript ASTs, key codes..
Stefan Judis
7 (Possibly) Good Reasons Not to Use TypeScript — Hang on.. did you read that headline right? Why not to use TypeScript? Yes, despite all the buzz around TypeScript, you don’t have to use it and there might be good reasons not to (although the reasons presented are highly opinionated and you’re free to disagree too).
Michael Krasnov
Quick bytes:
There's a sneaky bug in Chrome 80 that affects Array#reduce and it has broken people's Angular apps. Here's a potential quick fix.
If you want to go to VueConf in Austin in a few weeks, I'm told this is the last week you can get tickets.
💻 Jobs
Find a Dev Job Through Vettery — Vettery is completely free for job seekers. Make a profile, name your salary, and connect with hiring managers from top employers.
Vettery
Announcing a 100% Remote Opportunity as a Sr. Fullstack Dev (Node/React) — We’re passionate about giving developers the chance to do meaningful work by building transformational technology solutions.
Clevertech
📘 Articles & Tutorials
Why JavaScript is Eating HTML — The idea of JavaScript and HTML remaining separate and never the twain shall meet is now decidedly old-school and HTML-in-JS (a la JSX) is definitely A Thing™. Here’s a tour of all the parts involved.
Mike Turley
Building a Continuous Integration and Deployment Pipeline Using Docker — A really sweet, well paced tutorial that almost anyone would be able to follow to set up a basic CI/CD process for a Node app.
Tania Rascia
A Pool Table-Style 'Bouncing Balls' Simulation in Plain JS — It’s mostly code but included in tutorials as it’s designed to be a learning experience. Here’s a demo of the end result.
Meto Trajkovski
Optimize the Performance of Single Page Applications Using RUM
Site24x7 sponsor
How to Publish an Updated Version of an npm Package — If you release your own npm packages, or if you’ve inherited packages from your team, this is a nice guide that covers many of the challenges with getting a new version out.
Scott Vandehey
70 JavaScript Interview Questions — You’re never going to get a list like this that’s perfect but it’s a pretty solid list of the sorts of questions (and answers) you could get thrown at an interview, so if you’re in that position..
Mark Abeto
4 Methods to Search Through Arrays — includes, find, indexOf, and filter.
Stephen Hartfield
▶ Fast by Default: Algorithmic Performance Optimization in Practice — A talk from dotJS 2019.
Vladimir Agafonkin
ForwardJS Ottawa (May 26-29) Speakers Announced — Topics include React/Redux, TypeScript, containers, design systems, static sites, scaling teams and monorepos. Join us.
ForwardJS sponsor
Building Bridges with Other Departments in Developer Relations — If you've been in the JavaScript world a while, you might be familiar with Estelle Weyl and her insights will interest you if a career in developer relations has ever intrigued you.
Dave Nugent and Estelle Weyl
How To Create Maps with React and Leaflet
Shajia Abidi
Building a 'Grouper' Component for Svelte — Mat Ryer shows how you can build a Grouper component in Svelte to neatly group up lists into meaningful sections.
Mat Ryer
🔧 Code & Tools
Debug Visualizer: Visualize Data While Debugging in VS Code — An interesting looking VS Code extension that lets you visualize the result of an repeatedly evaluated expression. An intriguing idea, though I think you’d need to fiddle a bit to get the results you want.
Henning Dieterichs
plink-plonk.js: Listen to Web Pages As Their DOM Changes — This is really cool. Run this code at a console on a ‘busy’ Web page with lots of DOM changes and updates and you’ll be able to ‘hear’ them taking place.
Tom Hicks
Stream Chat API & JavaScript SDK for Custom Chat Apps — Build real-time chat in less time. Rapidly ship in-app messaging with our highly reliable chat infrastructure.
Stream sponsor
Type Route: A Flexible, Type-Safe Routing Library — A flexible routing library with TypeScript support, designed with React integration in mind (indeed, it’s used in React Router), but can be used with any framework (Vue, Angular, etc).
type-route
Ionic 5 Released: A Popular Webapp + Native Framework — Ionic’s goal is to get you an app you can put on an app store and the Web with a single shared code base, yet with adaptive styling to look native in each case. It was originally focused on Angular but now has an official React integration.
Brandy Carney
esbuild: An Extremely Fast JavaScript Bundler and Minifier, But... — An experiment in proving that tools for bundling JavaScript can actually be very fast.. though in this case by implementing one in Go ;-)
Evan Wallace
LegraJS: Render Lego Brick Graphics to a Canvas — A small library for drawing LEGO style brick shapes on to a canvas.
Preet Shihn
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