Render Template From DOM Select vs Cache

JavaScript performance comparison

Revision 7 of this test case created

Info

This test was spawned by some discussion in a StackOverflow thread:

http://stackoverflow.com/questions/9833312/how-do-i-properly-store-a-javascript-template-so-that-it-isnt-instantiated-mul

The purpose is to test the speed of rendering an underscore.js template when selecting the template from the DOM every time, vs selecting it once and re-rendering the cached template every time.

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    this.cachedItem = $("#test-template");
    this.cachedTemplate = _.template(this.cachedItem.html());
    this.output = $("#html-output-goes-here");
};

Benchmark.prototype.teardown = function() {
    delete this.cachedItem;
    delete this.cachedTemplate;
};
</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
Cached
var html = this.cachedTemplate();
this.output.html(html);
pending…
Non-Cached
var uncachedItem = $("#test-template");
var uncachedTemplate = _.template(uncachedItem.html());
var html = uncachedTemplate();
this.output.html(html);
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