Info

Original discussion at http://stackoverflow.com/questions/1232040/how-to-empty-an-array-in-javascript.

Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var small = [],
        medium = [],
        big = [],
        smallSize = 100,
        mediumSize = 10000,
        bigSize = 100000;
    
    while (smallSize--) {
        small.push(Math.random());
    }
    
    while (mediumSize--) {
        medium.push(Math.random());
    }
    
    while (bigSize--) {
        big.push(Math.random());
    }
  };
</script>

Test runner

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Java applet disabled.

small = [];

medium = [];

big = [];

small.length = 0;

medium.length = 0;

big.length = 0;

small.splice(0, small.length);

medium.splice(0, medium.length);

big.splice(0, big.length);

while (small.length > 0) {
    small.pop();
}

while (medium.length > 0) {
    medium.pop();
}

while (big.length > 0) {
    big.pop();
}

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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 Gajus on 30th September 2014
• Revision 2: published on 30th September 2014
• Revision 3: published on 7th October 2014
• Revision 8: published on 15th October 2014
• Revision 9: published by serjout on 16th October 2014
• Revision 10: published by serjout on 16th October 2014
• Revision 11: published by serjout on 16th October 2014
• Revision 12: published on 21st October 2014
• Revision 13: published on 21st October 2014
• Revision 14: published on 29th October 2014
• Revision 15: published on 30th October 2014

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