javascript clone object
var student = {name: "Rahul", age: "16", hobby: "football"};
//using ES6
var studentCopy1 = Object.assign({}, student);
//using spread syntax
var studentCopy2 = {...student};
//Fast cloning with data loss
var studentCopy3 = JSON.parse(JSON.stringify(student));
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4.33
6
var x = {myProp: "value"};
var xClone = Object.assign({}, x);
//Obs: nested objects are still copied as reference.
Thank you!
6
0
3.5
2
// syntax: let <newObjectName> = {...<initialObjectName>};
// example:
const me = {
name: 'Jakes',
age: 30,
};
const friend = {...me};
friend.age = 27;
console.log(friend.age); // 27
console.log(me.age); // 30
// -----------------------------
// BAD
// -----------------------------
const me = {
name: 'Jonas',
age: 30,
};
const friend = me;
friend.age = 27;
console.log(friend.age); // 27
console.log(me.age); // 30
Thank you!
2
0
4.5
8
let clone = Object.create(Object.getPrototypeOf(obj), Object.getOwnPropertyDescriptors(obj));
Thank you!
8
0
3.83
6
var sheep={"height":20,"name":"Melvin"};<br/>var clonedSheep=JSON.parse(JSON.stringify(sheep));<br/><br/>//note: cloning like this will not work with some complex objects such as: Date(), undefined, Infinity<br/>// For complex objects try: lodash's cloneDeep() method or angularJS angular.copy() method
Thank you!
6
0
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