Requirements: Dynamically add javascript with an Ajax-Request

[ischommer]

Adding JS through Requirements is currently limited to non-ajax-requests, as they are included in <script>-tags. This leads to lots of unneccessary includes for custom scenarious (conf. CMSMain->init()).

Implementation-Links: http://ajaxpatterns.org/On-Demand_Javascript http://www.rittau.org/blog/20061118-00 http://simonwillison.net/2004/May/26/addLoadEvent/ http://www.codeproject.com/useritems/js_IncludingEngine_Part_1.asp

[sminnee]

It would be great to get this as part of 2.2.1 - it would solve a lot of long-term issues that we have overloading of javascripts in the CMS, and could therefore be used to speed up the CMS.

[lperera]

Seems this piece of code is a good solution for dynamically loading javascript :

http://www.exit12.org/archives/12

[sminnee]

This is crucial to improving the performance of the CMS - it's important that we achieve this in 2.2.2.

[ischommer]

this request conflicts with the agenda for 2.2.2 of being a "stability release" - this can potentially cause a lot of weird javascript-behaviour as its not a very common technique. in addition, lots of our ajax-return-values have to be transformed from HTML to evaluated JS, again opening a window for errors - i suggest moving this to 2.3

[sminnee]

Having discussed this with you, I think you're right.

[mpeel]

Being able to unload Javascript would be good as well.

For example, the YoutubeGallery? and BlipTVGallery modules both have 'Videos' tabs - if they both load Javascript they could easily conflict with each other.

Not sure if this is necessary for this ticket, but could bear thinking about for the future at least.

[sminnee]

This is something that I'm working on.