Info

http://stackoverflow.com/questions/11818896/how-do-i-make-an-anchored-regex-match-in-the-middle-of-a-string-in-javascript

Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var target = "foobar barse";
    
    var str_match = "bar";
    var pre_regex = /^bar/;
  };
</script>

Test runner

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for (var i=0; i<10; i++) 
    new RegExp("^[\\S\\s]{"+i+"}"+str_match).test(target.substr(i));

for (var i=0; i<10; i++) 
    pre_regex.test(target.substr(i));

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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:

• Revision 1: published by Bergi on 5th August 2012
• Revision 7: published on 31st December 2012
• Revision 8: published by asmblah 1 week ago

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