Variable array vs array method

Benchmark created by Rich on

Description

Which is faster - using actual method in loop or variable for method value?

Preparation HTML

<script>
  var array1 = new Array();
  for (var i = 0; i < 1000000; i++) {
   array1[i] = i;
  }
  var array2 = new Array();
  for (var i = 0; i < 1000000; i++) {
   array2[i] = i;
  }
  var array1a = new Array();
  var array2a = new Array();
  
  function getArray1() {
   return array1;
  }
  
  function getArray2() {
   return array2;
  }
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
Reference the method.
for (var x = 0, len = getArray1().length; x < len; x++) {
 array1a[x] = getArray1()[x];
}
ready
Reference variable
var array2Values = getArray2();
for (var x = 0, len = array2Values.length; x < len; x++) {
 array2a[x] = array2Values[x];
}
ready

Revisions

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