Loop vs Slice copy (v15)

Revision 15 of this benchmark created on

Setup

var data = ['sdfsdf', 'sdofwsf', 'sadsfad', 3, 4, 5, 6, 7]

Test runner

Ready to run.

Testing in
TestOps/sec
loop copy
var copy = []
for (var j = 0, l = data.length; j < l; 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, l = data.length; j < l; j++) {
  copy[j] = data[j];
}
ready
quicker loop
var copy = [];
var length = data.length;
while (length--) {
  copy[length] = data[length];
}
ready
join / split
var copy = data.join('|').split('|');
ready

Revisions

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