If you're building a modern website then you'll be needing some javascript libraries and css.
Rather than hosting these common libraries on your own server, you should Use a Content Delivery Network.
Lucky for you Google, Microsoft, Yahoo and AOL host a range of popular javascript and css which you can directly link to for free.
This saves your bandwidth and speeds up your website load time.
CDN Catalog indexes these resources for your convenience.
Some of the resources here have both https and http URLs. However, we can simply omit the protocol portion of the URL and the protocol of the current page will be used.
e.g. //example.com/resource.js
CDN Catalog is maintained by Andrew Davey.
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