Run results for: Array filter vs. for loop - with for in

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser: Chrome 104

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Script Preparation code:

var arr = [1,2,3,4,5,6,7,8,9,0], farr;

AخA
 
var arr = [1,2,3,4,5,6,7,8,9,0], farr;

Tests:

Filter
farr = arr.filter(function(item) { return (item>4); });
farr = arr.filter(function(item) {
return (item>4);
});

for (var i=0,len=arr.length;i<len;i++) {
  if (arr[i]<5) continue;
  farr.push(arr[i]);
}

 
for (var i=0,len=arr.length;i<len;i++) {  if (arr[i]<5) continue;  farr.push(arr[i]);}

For 2
for (var i=0,len=arr.length;i<len;i++) { if (arr[i]>4) farr.push(arr[i]); }
for (var i=0,len=arr.length;i<len;i++) {
if (arr[i]>4) farr.push(arr[i]);
}

for (var i in arr) {
  if (arr[i]>4) farr.push(arr[i]);
}

 
for (var i in arr) {  if (arr[i]>4) farr.push(arr[i]);}