#firstclassfunctions

[developernaomi]

First-Class Functions

Functions in JavaScript are first-class objects, which means they can be treated like any other object: they can be assigned to a variable, passed as values to other functions, returned as the value from another function. Basically they are functions within functions using return function to help classify them.

Example exercise

What we are trying to achieve: 1) index receivesAFunction(callback) receives a function and calls it:

function receivesAFunction(callbackFunction) { return callbackFunction(); }

This is a function that receives a function and calls it

2) index returnsANamedFunction() "before all" hook:

function returnsANamedFunction(fn){ return function name(){ return "Hello function my name is"; }; }

Because the returned function has the name of name this is what makes this a Named function with a return

3) index returnsAnAnonymousFunction() "before all" hook: working:

function returnsAnAnonymousFunction(){ return function (){ return "My name is Judge Judy";} ; }

Because the second function in returnsAnAnonymousFunction is completely empty but we have a return with a value this makes the function anonymous

github exercise with working:

[codesolutionsstuff]

What is the first class function in JavaScript ?

If functions in a programming language are treated similarly to other variables, the language is said to have first-class functions. Therefore, the functions can be returned by another function, assigned to any other variable, or supplied as an argument. Functions are treated as first-class citizens in JavaScript. This implies that functions are just another sort of object and are nothing more than values. Let's use an illustration to learn more about the first-class function. Output: 200 + 200 = 400 100 - 7 = 93 50 * 50 = 2500 100 / 5 = 20 Example 2: Output: Shailesh Coder First class functions are what it's all about, and we've better explained how they're used and implemented. Read the full article

[codesolutionsstuff]

What is the first class function in JavaScript ?

If functions in a programming language are treated similarly to other variables, the language is said to have first-class functions. Therefore, the functions can be returned by another function, assigned to any other variable, or supplied as an argument. Functions are treated as first-class citizens in JavaScript. This implies that functions are just another sort of object and are nothing more than values. Let's use an illustration to learn more about the first-class function. Output: 200 + 200 = 400 100 - 7 = 93 50 * 50 = 2500 100 / 5 = 20 Example 2: Output: Shailesh Coder First class functions are what it's all about, and we've better explained how they're used and implemented. Read the full article

[codesolutionsstuff]

What is the first class function in JavaScript ?

If functions in a programming language are treated similarly to other variables, the language is said to have first-class functions. Therefore, the functions can be returned by another function, assigned to any other variable, or supplied as an argument. Functions are treated as first-class citizens in JavaScript. This implies that functions are just another sort of object and are nothing more than values. Let's use an illustration to learn more about the first-class function. Output: 200 + 200 = 400 100 - 7 = 93 50 * 50 = 2500 100 / 5 = 20 Example 2: Output: Shailesh Coder First class functions are what it's all about, and we've better explained how they're used and implemented. Read the full article