Run results for: test123213

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36 Edge/17.17134

Browser: Edge 17.17134

Operating system: Windows

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
lodash	161122.8 Ops/sec
Json string	625522.2 Ops/sec
deepCopy	687488.8 Ops/sec
angular Copy	516316.7 Ops/sec
infoDeepCopyWithNullCheck	429304.6 Ops/sec

HTML Preparation code:

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script src="//cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.7.2/angular.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...'
  },
  functioada:function(){alert("testtt")}
};

var myCopy = null;

   function deepCopy(object) {
         // if not array or object or is null return self
         if (typeof object !== 'object' || object == null) {
            return object;
        }
        var newObject;
        // handle case: array
        if (object instanceof Array) {
            newObject = [];
            for (var index = 0, length = object.length; index < length; index++) {
                newObject[index] = deepCopy(object[index]);
            }
            return newObject;
        }
        // handle case: object
        newObject = {};
        for (var property in object) {
            if (object.hasOwnProperty(property)) {
                newObject[property] = deepCopy(object[property]);
            }
        }
        return newObject;
    }
    function infoDeepCopyWithNullCheck(copyItem) {
        if ($.isPlainObject(copyItem)) {
            return $.extend(true, {}, copyItem);
        }
        return _.cloneDeep(copyItem);
    }

Tests:

lodash
myCopy = _.cloneDeep(MyObject);
Json string
myCopy = JSON.parse(JSON.stringify(MyObject));
deepCopy
myCopy = deepCopy(MyObject);
angular Copy
myCopy = angular.copy(MyObject);
infoDeepCopyWithNullCheck
myCopy = infoDeepCopyWithNullCheck(MyObject);

Run results for: test123213

lodash

Json string

deepCopy

angular Copy

infoDeepCopyWithNullCheck