Combining javascripts into a single file

Posted by toomanyairmiles on Stack Overflow See other posts from Stack Overflow or by toomanyairmiles
Published on 2010-05-09T22:25:03Z Indexed on 2010/05/09 22:28 UTC
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Filed under:

JavaScript

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jQuery

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optimization

Having read up recently on yahoo's web optimisation tips and using YSlow I've implemented a few of their ideas on one of my sites http://www.gwynfryncottages.com you can see the file here http://www.gwynfryncottages.com/js/gw-custom.js.

While this technique seems to work perfectly on most occasions, and really does speed up the site, I do notice a significantly higher number of errors where the javascripts don't load or don't load completely while I'm working on the site so three questions:-

is combining scripts this way a good idea at all in terms of reliablity?
is there any way to measure the number of errors?
is there any way to 'pre-load' the javascript or ensure that the number of loading errors is reduced?

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