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copying object javascript

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Inquisitive Iguana answered on March 8, 2020 Popularity 10/10 Helpfulness 4/10

answer copying object javascript

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copying object javascript

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// NORMAL COPY---------------------------------------
const a = { x: 0}
const b = a;
b.x = 1; // also updates a.x

// SHALLOW COPY---------------------------------------
const a = { x: 0, y: { z: 0 } };
const b = {...a}; // or const b = Object.assign({}, a);

b.x = 1; // doesn't update a.x
b.y.z = 1; // also updates a.y.z

// DEEP COPY---------------------------------------
const a = { x: 0, y: { z: 0 } };
const b = JSON.parse(JSON.stringify(a)); 

b.y.z = 1; // doesn't update a.y.z

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: stackoverflow.com

Tags: copy copying deep-copy javascript object shallow-copy

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Contributed on Feb 22 2022

Inquisitive Iguana

0 Answers Avg Quality 2/10

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copy object javascript

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var x = {myProp: "value"};
var y = Object.assign({}, x);

Popularity 10/10 Helpfulness 6/10 Language javascript

Source: stackoverflow.com

Tags: copy

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Contributed on Mar 08 2020

Evil Eel

0 Answers Avg Quality 2/10

copy object javascript

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// es6
const obj = {name: 'john', surname: 'smith'};
const objCopy = {...obj};

Popularity 10/10 Helpfulness 5/10 Language javascript

Source: Grepper

Tags: copy

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Contributed on Apr 09 2020

Beautiful Bear

0 Answers Avg Quality 2/10

copy object javascript

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var x = {key: 'value'}
var y = JSON.parse(JSON.stringify(x))

//this method actually creates a reference-free version of the object, unlike the other methods
//If you do not use Dates, functions, undefined, regExp or Infinity within your object

Popularity 10/10 Helpfulness 5/10 Language javascript

Source: Grepper

Tags: copy

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Contributed on May 22 2020

slgotting

0 Answers Avg Quality 2/10

copy js object

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const clone = structuredClone(object);

Popularity 9/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: copy

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Contributed on Sep 01 2022

aon4o

0 Answers Avg Quality 2/10

how to copy object in js

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const originalObject = { name: "John", age: 25 };
const copyObject = { ...originalObject };

Popularity 8/10 Helpfulness 3/10 Language javascript

Source: Grepper

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Contributed on Sep 12 2023

YOU.com

0 Answers Avg Quality 2/10

copying object javascript

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