Preparation code

<p id="foo">This is an element with <code>id="foo"</code>.</p>
<script>
  function gEBI(id) {
   return document.getElementById(id);
  };
  
  var $nodes = {}; // will be used by $memo()
  
  function $memo(id) {
   return $nodes[id] ? $nodes[id] : $nodes[id] = gEBI(id);
  };
</script>

Preparation code output

Test runner

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var node = document.getElementById('foo');

var node = gEBI('foo');

var node = $memo('foo');

var node = document.querySelector('#foo');

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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 olivvv on 28th July 2010 and last updated on 4th August 2010
• Revision 2: published by gf3 on 4th August 2010

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