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Closure ()

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Meandering Meerkat answered on July 4, 2020 Popularity 10/10 Helpfulness 4/10

answer Closure ()

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Closure ()

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// Closures
// In JavaScript, closure is one of the widely discussed and important concepts.
// A closure is a function that has access to the variable from another function’s scope which is accomplished by creating a function inside a function. As defined on MDN:
// “Closures are functions that refer to independent (free) variables. In other words, the function defined in the closure ‘remembers’ the environment in which it was created.”
// In JavaScript, closures are created every time a function is created, at function creation time. Most JavaScript developers use closure consciously or unconsciously — but knowing closure provides better control over the code when using them.
// Example:

function Spellname(name) {
var greet = "Hi, " + name + "!";
var sName = function() {
var welc = greet + " Good Morning!";
console.log(greet);
};
return sName;
}
var Myname = SpellName("Nishi");
Myname();  // Hi, Nishi. Good Morning!

// In the above example, the function sName() is closure; it has its own local scope (with variable welc) and also has access to the outer function’s scope. After the execution of Spellname(), the scope will not be destroyed and the function sName() will still have access to it.

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: betterprogramming.pub

Tags: javascript

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Contributed on Dec 20 2021

Meandering Meerkat

0 Answers Avg Quality 2/10

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closure in js

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A closure gives you access to an outer function’s scope from an inner function
//example
function init() {
  var name = 'Mozilla'; // name is a local variable created by init
  function displayName() { // displayName() is the inner function, a closure
    alert(name); // use variable declared in the parent function
  }
  displayName();
}
init();

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Nov 07 2020

Joyous Jackal

0 Answers Avg Quality 2/10

closures in javascript

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// A closure is a function having access to the parent scope, 
// even after the parent function has popped.

function greeting() {
    let message = 'Hi';

    function sayHi() {
        console.log(message);
    }

    return sayHi;
}
let hi = greeting();
hi(); // still can access the message variable

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: www.javascripttutorial.net

Tags: closures closure

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Contributed on Feb 01 2022

madhav

0 Answers Avg Quality 2/10

closure in javascript

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-->closure in javascript
//closure is the combination of function and the lexical enviornment in
//which the function is defined.closure give you access to the functions
//and variables outside the function.
function outer(){
  const outerData ="outer";
  function inner(){
    const innerData="inner";
    console.log(`${outerData} and{innerData}`);
  }
  inner();
}
outer();

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Dec 22 2021

tokyo

0 Answers Avg Quality 2/10

closure in javascript

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function makeFunc() {
  var name = 'Mozilla';
  function displayName() {
    alert(name);
  }
  return displayName;
}

var myFunc = makeFunc();
myFunc();

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Jul 04 2020

Black Buzzard

0 Answers Avg Quality 2/10

Closures in javascript

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let counter = (function() {
    let i = 0; // private property

    return {   // public methods
        get: function() {
            alert(i);
        },
        set: function(value) {
            i = value;
        },
        increment: function() {
            alert(++i);
        }
    };
})(); // module

counter.get();      // shows 0
counter.set(6);
counter.increment(); // shows 7
counter.increment(); // shows 8

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: en.wikipedia.org

Tags: closures closure

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Contributed on Apr 29 2022

Ali Salman

0 Answers Avg Quality 2/10

what is closure in JavaScript

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A combination of a function object and a scope (a set of variable bindings)

in which the function's variables are resolved is called a closure.

Callbacks are functions that are passed into another function as an argument.

Closures are functions that are nested in other functions, and it's often used to avoid scope clash

with other parts of a JavaScript program

<button type="button" onclick="funClosure()">Click to Count</button>

<p id="displayValue">0</p>
<script>
const add = (function(){
	let count = 0;
    return function(){
		count += 1;
        return count;
    }
})();

function funClosure(){
  document.getElementById("displayValue").innerHTML = add();
}
</script>

Popularity 9/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Mar 31 2023

@CodeGrepperManu

0 Answers Avg Quality 2/10

A closure Function

Comment

var returns_a_func = function () {
  var word = 'I can see inside '     function sentence(){    var word2 = 'I can also see outside. '     console.log(word + 'and ' + word2)   }   return sentence;
}var finalSentence = returns_a_func()finalSentence()

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: moringaschool.instructure.com

Tags: function functio

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Contributed on Jun 22 2021

Glorious Gentoo

0 Answers Avg Quality 2/10

JavaScript Closures

Comment

function outerFunction() {
  var outerVariable = 'I am from the outer function';

  function innerFunction() {
    console.log(outerVariable);
  }

  return innerFunction;
}

var closure = outerFunction();
closure(); // Output: 'I am from the outer function'

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: chat.openai.com

Tags: closures closure

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Contributed on Jun 16 2023

Asim Ehmedov

0 Answers Avg Quality 2/10

JavaScript Closures

Comment

// javascript closure example

// outer function
function greet() {
    // variable defined outside the inner function
    let name = 'John';
    // inner function
    function displayName() {

        // accessing name variable
        return 'Hi' + ' ' + name;
      
    }
    return displayName;
}

const g1 = greet();
console.log(g1); // returns the function definition
console.log(g1()); // returns the value

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: closures closure

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Contributed on May 22 2022

SAMER SAEID

0 Answers Avg Quality 2/10

Closure ()

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