title: Better for loading speed: large JSON file, or small CSV file that requires processing?
body: <p>For maximum load speed and page efficiency, is it better to have:</p>
  
  <ol>
  <li>An 18MB JSON file, containing an array of dictionaries, that I can load and start using as a native JavaScript object (e.g. <code>var myname = jsonobj[1]['name']</code>).</li>
  <li>A 4MB CSV file, that I need to read using the jquery.csv plugin, and then use lookups to refer to: <code>var nameidx = titles.getPos('name'); var myname = jsonobj[1][nameidx]</code>).</li>
  </ol>
  
  <p>I'm not really expecting anyone to give me a definitive answer, but a general suspicion would be very useful. Or tips for how to measure  - perhaps I can check the trade-off between load speed and efficiency using Developer Tools. </p>
  
  <p>My suspicion is that any extra efficiency from using a native JavaScript object in (1) will be outweighed by the much smaller size of the CSV file, but I would like to know if others think the same. </p>