equality checks

JavaScript performance comparison

Revision 3 of this test case created by John Cockrell

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var arr = [];
   
    for (var i = 0; i < 5000; i += 1) {
        if (i%2 == 0) { arr.push('string'); }
        else { arr.push('number'); }
    }
};
</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
Equality
var i = arr.length;

while (i--) {
   if (arr[i] == 'string') { arr[i] += ' found'; }
}
pending…
Strict Equality
var i = arr.length;

while (i--) {
   if (arr[i] === 'string') { arr[i] += ' found'; }
}
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