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JavaScript Symbol

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SAMER SAEID answered on October 26, 2021 Popularity 10/10 Helpfulness 1/10

answer JavaScript Symbol

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JavaScript Symbol

Comment

// two symbols with the same description

const value1 = Symbol('hello');
const value2 = Symbol('hello');

Popularity 10/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript

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Contributed on May 20 2022

SAMER SAEID

0 Answers Avg Quality 2/10

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Symbols Javascript

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let sym2 = Symbol('foo')
let sym3 = Symbol('foo')
 
		 console.log(Symbol(sym2==sym3)); /*false, symbols are guaranteed to be unique*/

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Jun 15 2022

Javasper

0 Answers Avg Quality 2/10

what is symbol in javascript

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Symbol is a primitive data type of JS along with string,number,bool,null and undef
which are used to identify object properties since none is equal to the other.

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Oct 26 2021

Sparkling Stork

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symbols javascript

Comments(1)

Symbols are primatives for unique values in javascript

> Symbol(value) returns a unique symbol

> Symbol.for(value) returns a unique symbol, but two calls using the 
same key will return the same symbol, within the scope

They can be useful because they are hidden from most iteration functions.
For ex, if you want to add a value to an object that you got back from a
third-party api. This will make sure your value doesn't appear in iteration
functions, and also won't require changing how the api is set up

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Contributed on Jan 25 2022

QuietHumility

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javascript Symbol Methods

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for()	Searches for existing symbols
keyFor()	Returns a shared symbol key from the global symbol registry.
toSource()	Returns a string containing the source of the Symbol object
toString()	Returns a string containing the description of the Symbol
valueOf()	Returns the primitive value of the Symbol object.

Popularity 10/10 Helpfulness 2/10 Language javascript

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Tags: javascript j

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Contributed on May 21 2022

SAMER SAEID

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Symbol Methods javascript

Comment

-1

// get symbol by name
let sym = Symbol.for('hello');
let sym1 = Symbol.for('id');

// get name by symbol
console.log( Symbol.keyFor(sym) ); // hello
console.log( Symbol.keyFor(sym1) ); // id

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

Symbol Methods javascript

Comment

// get symbol by name
let sym = Symbol.for('hello');
let sym1 = Symbol.for('id');

// get name by symbol
console.log( Symbol.keyFor(sym) ); // hello
console.log( Symbol.keyFor(sym1) ); // id

Popularity 10/10 Helpfulness 2/10 Language javascript

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Tags: javascript j

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Contributed on May 21 2022

SAMER SAEID

0 Answers Avg Quality 2/10

Symbol Properties javascript

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const x = Symbol('hey');

// description property
console.log(x.description); // hey

const stringArray = ['a', 'b', 'c'];
const numberArray = [1, 2, 3];

// isConcatSpreadable property
numberArray[Symbol.isConcatSpreadable] = false;

let result = stringArray.concat(numberArray);
console.log(result); // ["a", "b", "c", [1, 2, 3]]

Popularity 8/10 Helpfulness 2/10 Language javascript

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Contributed on May 21 2022

SAMER SAEID

0 Answers Avg Quality 2/10

javascript symbols

Comment

let sym1 = Symbol()
let sym2 = Symbol('foo')
let sym3 = Symbol('foo')

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Nov 02 2021

Puzzled Peafowl

0 Answers Avg Quality 2/10

JavaScript Symbol

Comment

// two symbols with the same description

const value1 = Symbol('hello');
const value2 = Symbol('hello');

console.log(value1 === value2); // false

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 Symbol

Comment

// two symbols with the same description

const value1 = Symbol('hello');
const value2 = Symbol('hello');

console.log(value1 === value2); // false

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: www.programiz.com

Tags: javascript j

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Contributed on Mar 19 2023

Imran Khan

0 Answers Avg Quality 2/10

JavaScript Symbol

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