Harvest Media - Web and Mobile Development http://harvest-media.com web and mobile development Fri, 20 Apr 2012 12:39:51 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Including 2 versions of jQuery http://harvest-media.com/?p=1 http://harvest-media.com/?p=1#comments Sun, 25 Mar 2012 17:47:32 +0000 admin http://harvest-media.com/?p=1 After reading the jQuery code, i think it is simpler than you think.

First important thing: when you load your jQuery.x.x.js, it will overwrite the existing $ and jQuery vars… BUT it keeps a backup copy of them (in _$ and _jQuery).
Calling noConflict(true) you restore the situation as it was before your js inclusion!

noConflict() gives you the running instance (the last loaded), so you can work with you version in this way

Resuming:
- original page loads his “jquery.versionX.js”
- $ and jQuery belong to versionX
- you call your “jquery.versionY.js”
- now $ and jQuery belong to versionY, plus _$ and _jQuery that belongs to versionX
- var my_jQuery = jQuery.noConflict(true);
- now $ and jQuery belong to versionX, _$ and _jQuery are probably null, and my_jQuery is versionY

Have a nice day ;)

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