Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    // We need the fastest way to to remove the last part of the string,
    // after the last "."
    var string = 'a.b.c.d'
  };
</script>

Test runner

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

Java applet disabled.

string.split('.').slice(0, -1).join('');

var s_split = string.split('.'),
    s_len = s_split.length;

s_split.slice(0, s_len - 1).join('');

string.slice(0, string.lastIndexOf('.'))

string.substring(0, string.lastIndexOf('.'))

string.substr(0, string.lastIndexOf('.'))

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

Compare results of other browsers

0 comments