Run results for: Underscore vs Lodash vs Custom Vanilla JS: isEqual v2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:142.0) Gecko/20100101 Firefox/142.0

Browser: Firefox 142

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Underscore equal

3.0M/s

JSON Stringify comparison

2.2M/s

Callback

2.1M/s

Lodash equal

745K/s

View exact numbers

Test name	Executions per second
✓ Underscore equal	2,964,664 Ops/sec
JSON Stringify comparison	2,239,002 Ops/sec
Callback	2,128,062 Ops/sec
Lodash equal	745,108 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
<script type="text/javascript">
  window.lodash = _;
  _ = null;
</script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.9.1/underscore-min.js'></script>
<script type="text/javascript">
  window.underscore = _;
  _ = null;
</script>

Script Preparation code:

var obj1 = {
  0: {
    1: {
      key: 'one'
  	}
  }
};

var obj1copy = {
  0: {
    1: {
      key: 'one'
  	}
  }
};

var obj2 = {
  0: {
    1: {
      key: 'two'
  	}
  }
};
function isEqual(a,b){
	return JSON.stringify(a) === JSON.stringify(b)
}

function compareObjects(a, b) {
 if (a === b) return true;

 if (typeof a != 'object' || typeof b != 'object' || a == null || b == null) return false;

 let keysA = Object.keys(a), keysB = Object.keys(b);

 if (keysA.length != keysB.length) return false;

 for (let key of keysA) {
   if (!keysB.includes(key)) return false;

   if (typeof a[key] === 'function' || typeof b[key] === 'function') {
     if (a[key].toString() != b[key].toString()) return false;
   } else {
     if (!compareObjects(a[key], b[key])) return false;
   }
 }

 return true;
}

Tests:

Underscore equal
underscore.isEqual(obj1, obj1copy);
Lodash equal
lodash.isEqual(obj1, obj1copy);
JSON Stringify comparison
JSON.stringify(obj1) === JSON.stringify(obj1copy)
Callback
compareObjects(obj1, obj1copy);

Run results for: Underscore vs Lodash vs Custom Vanilla JS: isEqual v2

Compare Underscore vs Lodash isEqual. Which is faster?

Underscore equal

Lodash equal

JSON Stringify comparison

Callback