HTML.js – Befriend the DOM
If you are making another dom traversal library, you must (imho):<p><pre><code>    * Explain why someone should use it over the standard: jQuery
    * Clearly explain the stance toward browser compatibility (not hand-waving & "oh who uses ie8 anyway?")
    * Come up with something better than "It's smaller than jQuery!"
</code></pre>
Without these points hit I don't even bother looking at DOM library. :/