javascript copy dictionary code example

Example 1: copy object javascript

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

Example 2: make copy of object javascript

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

//If you do not use Dates, functions, undefined, regExp or Infinity within your object

Example 3: copy dict js

var a = {'a':1}

var b = JSON.parse(JSON.stringify(a))
//a : {'a':1}
//b : {'a':1}
a['b'] = 'hello';
//a : {'a':1,'b':hello}
//b : {'a':1}