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JavaScript WeakMap Methods

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SAMER SAEID answered on May 21, 2022 Popularity 9/10 Helpfulness 2/10

answer JavaScript WeakMap Methods

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JavaScript WeakMap Methods

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const weakMap = new WeakMap();
console.log(weakMap); // WeakMap {} 

let obj = {};

// adding object (element) to WeakMap
weakMap.set(obj, 'hello');

console.log(weakMap); // WeakMap {{} => "hello"}
// get the element of a WeakMap
console.log(weakMap.get(obj)); // hello
// check if an element is present in WeakMap
console.log(weakMap.has(obj)); // true
// delete the element of WeakMap
console.log(weakMap.delete(obj)); // true

console.log(weakMap); // WeakMap {}

Popularity 9/10 Helpfulness 2/10 Language javascript

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Tags: javascript methods weakmap

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Contributed on May 21 2022

SAMER SAEID

0 Answers Avg Quality 2/10

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what is weakmap and weakset in javascript

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/*
	SIMPLE EXPLANATION:

	The WeakMap takes only objects as keys. 
    When one object is not being referred to anymore, it and its
    associated value will get removed from the WeakMap.

    The WeakSet functions similarly.
    Its values are unique and are only objects.
    When one object is not being referred to anymore, it will get removed
    from the WeakSet.
*/

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Sep 11 2022

kid amogus

0 Answers Avg Quality 2/10

JavaScript WeakMap

Comment

const weakMap = new WeakMap();
console.log(weakMap); // WeakMap {} 

let obj = {};

// adding object (element) to WeakMap
weakMap.set(obj, 'hello');

console.log(weakMap); // WeakMap {{} => "hello"}

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on May 21 2022

SAMER SAEID

0 Answers Avg Quality 2/10

JavaScript WeakMap Methods

Comment

const weakMap = new WeakMap();
console.log(weakMap); // WeakMap {} 

let obj = {};

// adding object (element) to WeakMap
weakMap.set(obj, 'hello');

console.log(weakMap); // WeakMap {{} => "hello"}
// get the element of a WeakMap
console.log(weakMap.get(obj)); // hello
// check if an element is present in WeakMap
console.log(weakMap.has(obj)); // true
// delete the element of WeakMap
console.log(weakMap.delete(obj)); // true

console.log(weakMap); // WeakMap {}

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
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Contributed on May 21 2022

SAMER SAEID

0 Answers Avg Quality 2/10

JavaScript WeakMap Methods

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