[SOLVED] Is it better to reference jQuery file include through jQuery CDN?

Is it better to reference jQuery file include through jQuery CDN?

Is it better to reference jQuery file inclusion through jQuery CDN for better performance?

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js" ></script>

Is it better to reference stored jQuery file in our project?

<script type="text/javascript" src="/js/jQuery.min.js"></script>

As jQuery CDN link handles caching, Does it improve performance more than jQuery file included from our project?

Solution

First variant. Because google has best world-wide servers.

Decreased Latency
Increased parallelism
Better caching

The best way to initiate jQuery engine:

<script src="http://www.google.com/jsapi"></script>
<script>
  google.load("jquery", "1.10.2");

  google.setOnLoadCallback(function() {
  // Place init code here instead of $(document).ready()
 });
</script>

Here is a good article about this:

http://encosia.com/3-reasons-why-you-should-let-google-host-jquery-for-you/