Array direct assignment vs push (v4)

Revision 4 of this benchmark created by LJHarb on

Setup

var array = new Array(100);
    var array2 = [];
    array2.len = 0;
    var other_array = 0 ;
    
    var array_push = function (arr, item) {
       arr[arr.length] = item;
    };

Test runner

Ready to run.

Testing in
TestOps/sec
Direct assignment
for(var i = 0; i < 100; i++)
{
  array[i] = "test";
}
ready
Push
for(var i = 0; i < 100; i++)
{
  array.push("test");
}
ready
Direct assignment (calculated)
for(var i = 0; i < 100; i++)
{
  array[array.length] = "test";
}
ready
other
for(var i = 0; i < 100; i++)
{
  array[other_array++] = "test";
}
ready
array2.len
for(var i = 0; i < 100; i++)
{
  array2[array2.len++] = "test";
}
ready
Direct assignment via function
for (var i = 0; i < 100; ++i) {
   array_push(array2, 'test');
}
ready

Revisions

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