Run results for: my isEqual

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36

Browser: Chrome 86

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
_.isEqual Level 1	645540.8 Ops/sec
isEqual Level 1	1411981.0 Ops/sec
_.isEqual Level 2	411203.7 Ops/sec
isEqual Level 2	1178556.0 Ops/sec
_.isEqual Level 3	321525.1 Ops/sec
isEqual Level 3	1007631.0 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>
<script>
  function isEqual(a, b) {
    var aProps = Object.getOwnPropertyNames(a)
      , bProps = Object.getOwnPropertyNames(b);

    if (aProps.length != bProps.length) {
      return false;
    }

    for (var i = 0; i < aProps.length; i++) {
      var propName = aProps[i];
      if (typeof(a[propName]) === 'object' && a[propName] !== null) {
        if (!isEqual(a[propName], b[propName])) {
          return false
        }
      } else if (Number.isNaN(a[propName])) {
        if (!Number.isNaN(b[propName])) {
          return false
        }
      } else if (a[propName] !== b[propName]) {
        return false;
      }
    }
    return true;
  }
</script>

Script Preparation code:

// 1 level deep
window.foo1 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };
window.bar1 = { a: 1, b: 3, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };

// 2 levels deep
window.foo2 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };
window.bar2 = { a: 1, b: 2, c: { a: 1, b: 3, c: { a: 1, b: 2 } } };

// 3 levels deep
window.foo3 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };
window.bar3 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 4 } } };

Tests:

_.isEqual Level 1
_.isEqual(window.foo1, window.bar1)
isEqual Level 1
isEqual(window.foo1, window.bar1)
_.isEqual Level 2
_.isEqual(window.foo2, window.bar2)
isEqual Level 2
isEqual(window.foo2, window.bar2)
_.isEqual Level 3
_.isEqual(window.foo3, window.bar3)
isEqual Level 3
isEqual(window.foo3, window.bar3)

Run results for: my isEqual

Test on isEqual performance

_.isEqual Level 1

isEqual Level 1

_.isEqual Level 2

isEqual Level 2

_.isEqual Level 3

isEqual Level 3