Breaking News: Grepper is joining You.com. Read the official announcement!

create immutable object in javascript

Add Answer

maldito codificador answered on January 19, 2022 Popularity 9/10 Helpfulness 1/10

answer create immutable object in javascript

related how to create immutable object in javascript

create immutable object in javascript

Comment

-1

let x = {name: "blood", color: "red"}
let {...y} = x

// let's update the value of "x"
x.name = "strawberry"

console.log(x) // will return {name: "strawberry", color: "red"}
console.log(y) // will return {name: "blood", color: "red"}
/* "y" haven't changed because it copied the value of "x" and made himself
a whole separated ohject, instead of just coping the reference of "x"
(reference copy case:- let y = x) */
/* NOTE: get some youtube classes about javascript reference type and primitive
data types, if you're not clear enough about what i mean by "reference" */

Popularity 9/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript object

Link to this answer
Share Copy Link

Contributed on Jan 19 2022

maldito codificador

0 Answers Avg Quality 2/10

Closely Related Answers

how to create immutable object in javascript

Comment

The Object.freeze() method freezes an object: 
that is, prevents new properties from being added to it; 
prevents existing properties from being removed; 
and prevents existing properties, or their enumerability, 
configurability, or writability, from being changed, 
it also prevents the prototype from being changed. 
The method returns the object in a frozen state.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze

const obj = {
  prop: 42
};

Object.freeze(obj);

obj.prop = 33;
// Throws an error in strict mode

console.log(obj.prop);
// expected output: 42

Popularity 9/10 Helpfulness 6/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on May 05 2022

Rehman

0 Answers Avg Quality 2/10

create immutable object in javascript

Contents

More Related Answers

create immutable object in javascript

Closely Related Answers

how to create immutable object in javascript

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.