Replacing jQuery with D3
A great reference for someone starting out with D3 looking to replace some basic jQuery incantations with D3 ones.  I think this code sample is particularly telling:<p><i>jQuery</i><p><pre><code>    $('.foo').find('.bar');
</code></pre>
<i>D3</i><p><pre><code>    d3.selectAll('.foo').selectAll('.bar');
</code></pre>
The D3 API consistency is so juicy and delicious.