linking to jquery

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I am wanting to code some custom blocks which will require jquery. Is jquery added only by blocks that require it or are links to jquery automatically included?

I want to add my own links to the google hosted versions so that i can easily update them in my header file. Would I need to remove any core jquery links before adding my new link?

Thanks

 
aaron replied on at Permalink Reply
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ScottC replied on at Permalink Reply
ScottC
which is 1.3.2

This is included currently with the header_required file for the time being, although I could definitely see and recommend it being moved to only be included if an element on the page when the page is not in edit mode or otherwise have the toolbar up.

I have noticed the new packages are leaning in this direction, so I could see all javascript dependent block display including this explicitly and the header_required checks to make sure jquery isn't already there, and if it is then it adds it.