Run results for: optimized loop

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36

Browser: Chrome 73

Operating system: Mac OS X 10.14.4

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Unoptimized	60.1 Ops/sec
Optimized	116.6 Ops/sec

Script Preparation code:


  var array = new Array();
  for (var i = 0; i < 100000; i++) {
    array.push(i);
  }

Tests:

Unoptimized
var dummy = 0; for (var i = 0; i < array.length; i++) { dummy += array[i]; }
Optimized
var dummy = 0; for (var i = 0, al = array.length; i < al; i++) { dummy += array[i]; }