Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:130.0) Gecko/20100101 Firefox/130.0
Firefox 130
Windows
Desktop
5 months ago
Test name Executions per second
Lodash CloneDeep 699873.0 Ops/sec
Json Clone 383450.9 Ops/sec
recursiveDeepCopy 4960478.5 Ops/sec
HTML Preparation code:
AخA
 
1
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
x
 
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....',
    x: {
      description: 'Creates a deep copy of source, which should be an object or an array.',
      myNumber: 123456789,
      myBoolean: true,
      bsae64String: 'abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc123',
      jayson: {
        stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
        parse: 'JSON.parse() method parses a JSON string...'
      }
    },
    parse: 'JSON.parse() method parses a JSON string...'
  }
};
var myCopy = null;
function recursiveDeepCopy(o) {
    var newO,
      i;
  
    if (typeof o !== 'object') {
      return o;
    }
    if (!o) {
      return o;
    }
  
    if ('[object Array]' === Object.prototype.toString.apply(o)) {
      newO = [];
      for (i = 0; i < o.length; i += 1) {
        newO[i] = recursiveDeepCopy(o[i]);
      }
      return newO;
    }
  
    newO = {};
    for (i in o) {
      if (o.hasOwnProperty(i)) {
        newO[i] = recursiveDeepCopy(o[i]);
      }
    }
    return newO;
  }
Tests:
  • Lodash CloneDeep

     
    myCopy = _.cloneDeep(MyObject);
  • Json Clone

     
    myCopy = JSON.parse(JSON.stringify(MyObject));
  • recursiveDeepCopy

     
    myCopy = recursiveDeepCopy(MyObject);