Zero filled array creation

JavaScript performance comparison

Revision 21 of this test case created by Jussi Kalliokoski

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Binary concatenation
for (var i = 100, a = [], add = [0]; i; i >>=1) {
    if (i & 1) a.push.apply(a, add);
    add.push.apply(add, add);
}
pending…
Typed array conversion
[].slice.call(new Uint8Array(100));
pending…
Array assign
for (var i = 0, a = new Array(100); i < 100;) a[i++] = 0;
pending…
Array push
for (var i = 0, a = []; i < 100; i++) a.push(0);
pending…
Array apply and map
var a = Array.apply(null, Array(100)).map(function () { return 0; });
pending…

Compare results of other browsers

Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL.

0 Comments