copy object javascript

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

                                    var sheep={&quot;height&quot;:20,&quot;name&quot;:&quot;Melvin&quot;};<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

                                    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