sort-nodelist

JavaScript performance comparison

Test case created

Preparation code

<div>
        <ul>
                <li id="item-2"><a href="#">item 2</a></li>
                <li id="item-1"><a href="#">item 1</a></li>
                <li id="item-3"><a href="#">item 3</a></li>
        </ul>
</div>
<script>
var toArray = this.toArray = function(list) {
        var retval = [];
        for (var i=list.length; i--;) {
                retval.push(list[i]);
        }
        return retval;
};
var a = document.getElementsByTagName('li');
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
Nodelist to Array via native
[].slice.call(a);
pending…
Nodelist to Array via custom
toArray(a);
pending…
Sort Nodelist (native transformation)
[].sort.call([].slice.call(a), function(a, b) {
        return a.id > b.id ? 1 : -1;
});
pending…
Sort Nodelist (custom transformation)
[].sort.call(toArray(a), function(a, b) {
        return a.id > b.id ? 1 : -1;
});
pending…

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