Array direct assignment vs push (v64)

Revision 64 of this benchmark created on

Setup

var values = [],
    count = 100000;
  
  for (var i = 0; i < count; i++) {
    values[i] = i;
  }

Test runner

Ready to run.

Testing in
TestOps/sec
Direct assignment
var array = Array(count);
for (var i = 0; i < count; i++) {
  array[i] = values[i];
}
ready
Push
var array = [];
for (var i = 0; i < count; i++) {
  array.push(values[i]);
}
ready
Accessing length property
var array = [];
for (var i = 0; i < count; i++) {
  array[array.length] = values[i];
}
ready
Cached length
var arrayLength = 0;
var array = [];
for (var i = 0; i < count; i++) {
  array[arrayLength++] = values[i];
}
ready

Revisions

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