.replace() vs. .split().join() vs .replaceAll()

JavaScript performance comparison

Revision 41 of this test case created by shilman

Info

A solution for replacement of strings: removed global replace for apples-to-apples comparison since string.replace only replaces the first instance of a string.

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var mystring = 'okay.this.is.a.string';
    var dynamicRegex = new RegExp(".","");
    var staticRegex = /\./;
};
</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
.replace(/\./,' ')
result = mystring.replace(/\./,' ');
pending…
.replace(new RegExp(".","")," ")
result = mystring.replace(new RegExp(".","")," ");
pending…
.split('.').join(' ')
result = mystring.split('.').join(' ');
pending…
Stored Dynamic Regex
result = mystring.replace(dynamicRegex," ");
pending…
Stored static Regex
result = mystring.replace(staticRegex," ");
pending…
String replace
result = mystring.replace('.',' ');
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