Run results for: Angular clone vs Lodash clone vs JSON Clone vs Object.assign

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36

Browser: Chrome 68

Operating system: Mac OS X 10.13.6

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
Lodash clone	934593.9 Ops/sec
Json clone	285213.3 Ops/sec
Angular copy	496424.8 Ops/sec
object assign	2071949.0 Ops/sec

HTML Preparation code:

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.min.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var MyObject = {
  description: 'Creates a deep copy of source, which should be an object or an array.',
  myNumber: 123456789,
  myBoolean: true,
  jayson: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  }
};

var myCopy = null;

Tests:

Lodash clone
myCopy = _.clone(MyObject);
Json clone
myCopy = JSON.parse(JSON.stringify(MyObject));
Angular copy
myCopy = angular.copy(MyObject);
object assign
myCopy = Object.assign({}, MyObject);

Run results for: Angular clone vs Lodash clone vs JSON Clone vs Object.assign

Lodash clone

Json clone

Angular copy

object assign