Run results for: Object Array Equality (Map-JSON.stringify + sort vs Multiple Loops)) Fixed

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 120

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Multiple Loops

5/s

Map-JSON.stringify + Sort

4/s

View exact numbers

Test name	Executions per second
✓ Multiple Loops	5 Ops/sec
Map-JSON.stringify + Sort	4 Ops/sec

Script Preparation code:

var objArr1 = [{
  a: 1,
  b: 2,
  c: 3,
  d: 4,
  e: 5,
}]
var objArr2 = [{
  e: 5,
  b: 2,
  a: 1,
  d: 4,
  c: 3,
}]
function mapStringifySort($objArr1, $objArr2) {
  $objArr1 = $objArr1.map(obj=>JSON.stringify(obj)).sort()
  $objArr2 = $objArr2.map(obj=>JSON.stringify(obj)).sort()
  for (let i=0; i<$objArr1.length; i++){
    if($objArr1[i]!==$objArr2[i]) return false
  }
  return true
}
function multipleLoops($objArr1, $objArr2) {
  const has = Object.prototype.hasOwnProperty
  return $objArr1.every(($obj1)=>{
    let $obj1Len = Object.keys($obj1).length
    return $objArr2.some(($obj2)=>{
      for(let key in $obj1) {
        if($obj2[key]!==$obj1[key]) {
          return false
        }
        if(!has.call($obj2,key)) {
          return false
        }
      }
      return $obj1Len===Object.keys($obj2).length
    })
  })
}

Tests:

Map-JSON.stringify + Sort
for(let i=0; i<10000; i++) { console.log(mapStringifySort(objArr1,objArr2)) }
Multiple Loops
for(let i=0; i<10000; i++) { console.log(multipleLoops(objArr1,objArr2)) }