Run results for: Object Array Equality (Map-JSON.stringify + sort vs Multiple Loops)) v3

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Map-JSON.stringify + Sort	0.8 Ops/sec
Multiple Loops	1.8 Ops/sec

Script Preparation code:

const longstr = generateRandomString(10000)
var objArr1 = [{},{
  a: 1,
  b: 2,
  c: 3,
  d: 4,
  e: 5,
},{a:undefined},{longstr}]
var objArr2 = [{},{longstr},{
  a: 1,
  b: 2,
  c: 3,
  d: 4,
  e: 5,
},{a:undefined}]
function mapStringifySort($objArr1, $objArr2) {
  if ($objArr1.length!==$objArr2.length) return false
  $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, $objArr2) {
  if ($objArr1.length!==$objArr2.length) return false
  const has = Object.prototype.hasOwnProperty
  let bArray, sArray, foundSArrayIdxs = {}
  if($objArr2.length>$objArr2.length) {
      bArray = $objArr2
      sArray = $objArr1
  } else {
      bArray = $objArr1
      sArray = $objArr2
  }
  return bArray.every(($obj1)=>{
    let $obj1Keys = Object.keys($obj1)
    let $obj1Len = $obj1Keys.length
    return sArray.some(($obj2, sidx)=>{
      if(foundSArrayIdxs[sidx]) return false
      for(let i=0; i<$obj1Keys.length; i++) {
        let key = $obj1Keys[i]
        if($obj2[key]!==$obj1[key]) {
          return false
        }
        if(!has.call($obj2,key)) {
          return false
        }
      }
      let found = $obj1Len===objectLength($obj2)
      if(found) {
          foundSArrayIdxs[sidx] = true
      }
      return found
    })
  })
}
function objectLength(obj) {
    let i = 0;
    for(let k in obj){
        i++
    }
    return i
}
function generateRandomString(length) {
    let result = '';
    let characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    let charactersLength = characters.length;
    for (let i = 0; i < length; i++) {
        result += characters.charAt(Math.floor(Math.random() * charactersLength));
    }
    return result;
}

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)) }

Run results for: Object Array Equality (Map-JSON.stringify + sort vs Multiple Loops)) v3

Map-JSON.stringify + Sort

Multiple Loops