Run results for: Test for

Run details:

User agent: Mozilla/5.0 (X11; Fedora; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3053.3 Safari/537.36

Browser: Chrome 59

Operating system: Fedora

Device Platform: Other

Date tested: 7 years ago

Script Preparation code:

var arr = [];
  for (var i = 0; i < 1000; i++) {
    arr[i] = i;
  }

  function someFn(ix) {
    return ix * 5;
  }

Tests:

for 3
var l = arr.length; var result=0; for (var i = 0; i < l; i++) { result += arr[i] * 5; }
for 4
var result=0; for (var i = 0; i < arr.length; i++) { result += arr[i] * 5; }
copy
var arr = []; for (var i = 0; i < 1000; i++) { arr[i] = i; } var result=0; for (var i = 0; i < arr.length; i++) { result += arr[i] * 5; }
with
var obj = {a:1,b:2}; with(obj){ var arr = []; for (var i = 0; i < 1000; i++) { arr[i] = i; } var result=0; for (var i = 0; i < arr.length; i++) { result += arr[i] * 5; } }