splice vs slice

JavaScript performance comparison

Test case created by DannyC

Info

Check what's better to remove an element from an array

Preparation code

<script>
  var a;
</script>

Test runner

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

Java applet disabled.

Testing in unknown unknown
Test Ops/sec
slice
a = [1, 2, 3, 4, 5, 6, 7];
a = a.slice(0, 3).concat(a.slice(4))
pending…
splice
a = [1, 2, 3, 4, 5, 6, 7];
a.splice(3, 1);
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. Here’s a list of current revisions for this page:

0 comments

Add a comment