Loop vs Slice copy (v28)

Revision 28 of this benchmark created by Meeji on

Setup

var data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Test runner

Ready to run.

Testing in
TestOps/sec
while loop fixed size
var i = data.length,
    copy = new Array(i);
while (i--)
  copy[i] = data[i];
ready
concat
var copy = data.concat([]);
ready
loop copy
var copy = []
for (var j = 0; j < data.length; j++)
  copy.push(data[j]);
ready
splice copy
var copy = data.slice(0);
ready
loop fixed size
var copy = new Array(data.length);
for (var j = 0; j < data.length; j++)
  copy[j] = data[j];
ready

Revisions

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