MeasureThat.net

Run results for: Deep equality

Comapison of two methods of objects comparison: by strings of JSON.stringify and isEqual

Go to the benchmark
Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Safari/537.36
Chrome 76
Windows
Desktop
5 years ago
Test name Executions per second
JSON.stringify 2.8 Ops/sec
lodash.isEqual 1.2 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
 
window.isEqualStringify = (obj1, obj2) => JSON.stringify(obj1) === JSON.stringify(obj2);
window.isEqualLodash = _.isEqual;
​
window.test1 = {
  obj: {},
  arr: [],
};
​
for (let i = 0; i < 1000; i++) {
  test1.obj['prop_' + i] = {};
  
  let arrReference = [];
  test1.arr.push(arrReference);
  
  let objReference = test1.obj['prop_' + i];
  for (let j = 0; j < i; j++) {
    objReference['internal_prop_' + j] = {};
    objReference = objReference['internal_prop_' + j];
    
    arrReference.push(j);
  }
}
​
window.test2 = JSON.parse(JSON.stringify(test1));
Tests:

  • JSON.stringify

     
    isEqualStringify(test1, test2)

  • lodash.isEqual

     
    isEqualLodash(test1, test2)