Sencha Touch 2 template vs manual

JavaScript performance comparison

Revision 3 of this test case created

Info

Testing the template apply vs manual loop. Both return the text string containing data to be inserted. Both are now precompiled.

Preparation code

<script src="//extjs.cachefly.net/touch/sencha-touch-2.1.0/sencha-touch-all.js">
</script>
<script>
Benchmark.prototype.setup = function() {
    var data = [];
    for(var i = 0; i < 100; i++) {
        data.push({
                id: 'id-' + i,
                title: 'Best title ever',
                content: 'This is the content text',
                img: {
                        url: 'http://www.img.com/img.png',
                        width: 50,
                        height: 50
                }
        });
    }
   
    var tpl = [
        '<ul>',
                '<tpl for=".">',
                        '<li id="{id}">',
                                '<h1 class="title">{title}</h1>',
                                '<div class="image" style="background-image: url({img.url}); background-size: {img.height}px {img.width}px;"></div>',
                                '<div class="text">{content}</div>',
                        '</li>',
                '</tpl>',
        '</ul>'
    ];
   
    var xtpl = Ext.create('Ext.XTemplate', tpl, {compiled: true});
   
    var compiled = '<ul>';
    var i = data.length;
    while (--i >= 0) {
      compiled += '<li id="' + data[i].id + '"><h1 class="title">' + data[i].title + '</h1><div class="image" style="background-image: url(' + data[i].img.url + '); background-size: ' + data[i].img.height + 'px ' + data[i].img.width + 'px;"></div><div class="text">' + data[i].content + '</div></li>';
    }
    compiled += '</ul>';
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
Sencha Touch 2
var res = xtpl.apply(data);
pending…
Manual
var res=compiled;
pending…

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