RegExp vs toLowerCase (v2)

Revision 2 of this benchmark created by Vladimir Sitnikov on

Description

Looks like regular expressions in Chrome are even faster than plain string comparation.

Preparation HTML

<script>
  var a = 'I AM A MONSTER, let’s talk sometime about how awesome I am!',
      b, c;
  var d = 'i AM a monster, let’s talk sometime about how awesome I am!'.toLowerCase(),
      e = a.toLowerCase();
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
RegExp
if (/^i AM a monster, let’s talk sometime about how awesome I am!/i.test(a)) {
 b;
}
else {
 c;
}
ready
toLowerCase
if (a.toLowerCase() === 'i AM a monster, let’s talk sometime about how awesome I am!'.toLowerCase()) {
 b;
}
else {
 c;
}
ready
toLowerCase prepared
if (d === e) {
 b;
} else {
 c;
}
ready

Revisions

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