Run results for: compare arrays 23

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36

Browser: Chrome 105

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
_.isEqual	727715.6 Ops/sec
JSON.stringify	172233.3 Ops/sec
equals	871546.8 Ops/sec
equalsIgnoreOrder	111756.8 Ops/sec
arrIdentical	917390.6 Ops/sec
arrForLoop	932387.7 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

window.foo = [1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4"];
window.bar = [1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4", 1,2,3,"4"];

window.equals = (a, b) =>
  a.length === b.length &&
  a.every((v, i) => v === b[i]);

window.equalsIgnoreOrder = (a, b) => {
  if (a.length !== b.length) return false;
  const uniqueValues = new Set([...a, ...b]);
  for (const v of uniqueValues) {
    const aCount = a.filter(e => e === v).length;
    const bCount = b.filter(e => e === v).length;
    if (aCount !== bCount) return false;
  }
  return true;
}

window.arrIdentical = (a1, a2) => {
    // Tim Down: http://stackoverflow.com/a/7837725/308645
    var i = a1.length;
    if (i != a2.length) return false;
    while (i--) {
        if (a1[i] !== a2[i]) return false;
    }
    return true;
}

window.arrForLoop = (a1, a2) => {
  let result = true;
  let i = a1.length;
  
  if(i !== a2.length) {
   	result = false; 
  } else {
   	while (i--) {
        if(a1[i] !== a2[i]) {
          result = false;
          break;
        }
    } 
  }
  
  return result;
}

Tests:

_.isEqual
_.isEqual(window.foo, window.bar)
JSON.stringify
JSON.stringify(window.foo) === JSON.stringify(window.bar);
equals
window.equals(window.foo, window.bar)
equalsIgnoreOrder
window.equalsIgnoreOrder(window.foo, window.bar)
arrIdentical
arrIdentical(window.foo, window.bar)
arrForLoop
arrForLoop(window.foo, window.bar)

Run results for: compare arrays 23

lodash vs json stringify and other methods

_.isEqual

JSON.stringify

equals

equalsIgnoreOrder

arrIdentical

arrForLoop