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javascript nested functions

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MattDESTROYER answered on May 9, 2022 Popularity 10/10 Helpfulness 3/10

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/*
 * A nested function is a function within another function.
 * A nested function is local, meaning it can only be accessed
 * by code within that same function scope.
 */
function globalFunction() {
	function localFunction() {
		return "Hello world!";
	}
	return localFunction();
}
console.log(globalFunction()); // -> "Hello world!"
console.log(localFunction()); // -> Uncaught ReferenceError: localFunction is not defined

Popularity 10/10 Helpfulness 3/10 Language javascript

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Tags: javascript

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Contributed on Jun 15 2022

MattDESTROYER

0 Answers Avg Quality 2/10

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/*
Function Syntax:
function functionName(parameter1, parameter2, ...) {
	return something;
}
*/

function globalFunction(a, b, c) {
	// `localFunction` cannot be called outside of `globalFunction`, once `globalFunction` finishes, `localFunction` ceases to exist
	function localFunction(d, e, f) {
		return [ f, e, d ];
	}
	return localFunction(a, b, c);
}

Popularity 9/10 Helpfulness 3/10 Language javascript

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Contributed on May 09 2022

MattDESTROYER

0 Answers Avg Quality 2/10

JavaScript Nested Function

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// nested function example

// outer function
function greet(name) {

    // inner function
    function displayName() {
        console.log('Hi' + ' ' + name);
    }

    // calling inner function
    displayName();
}

// calling outer function
greet('John'); // Hi John

Popularity 9/10 Helpfulness 2/10 Language javascript

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Contributed on May 22 2022

SAMER SAEID

0 Answers Avg Quality 2/10

javascript nested functions

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// nested function

let a = 10;

const main = () => {
  let b = 20;
  const inner = () => {
    let c = 30;
    console.log(a, b, c);
  };

  return inner();
};

main(); // 10 20 30

Popularity 8/10 Helpfulness 2/10 Language javascript

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Contributed on Nov 27 2022

Don't touch

0 Answers Avg Quality 2/10

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