Sencha Touch 2 template vs manual

JavaScript performance comparison

Revision 9 of this test case created

Info

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

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
    });
};
</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 = '<ul>';
for (var i = 0; i < data.length; i++) {
  res += '<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>';
}
res += '</ul>';
pending…

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