Answers for "how to make a copy of a variable in javascript"

2

copy variable value javascript

//value
var myValue = someValue;
//array
var myArry = JSON.parse(JSON.stringify(someArr));

//take object property value in variable
var myValue = object.someProperty; //property value
Posted by: Guest on August-01-2021
7

copy object javascript

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
Posted by: Guest on May-22-2020
0

best way to clone an object in javascript

const person = {
    firstName: 'John',
    lastName: 'Doe'
};


// using spread ...
let p1 = {
    ...person
};

// using  Object.assign() method
let p2 = Object.assign({}, person);

// using JSON
let p3 = JSON.parse(JSON.stringify(person));
Posted by: Guest on November-04-2020

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