2 Dec 2006 14:34
Re: do plugin js events run on every page
Chris Smith <chris <at> jalakai.co.uk>
2006-12-02 13:34:27 GMT
2006-12-02 13:34:27 GMT
Chris Smith wrote: > Martin Tschofen wrote: >> If I have a plugin that adds a javascript event, does this event get >> called on every page (that's what it looks like) or just when the >> plugin (it's syntax) was used? >> >> How can I control that? Is it possible to only trigger the js event >> when I use the plugin on a page? >> I'm noticing some performance issues on some older computers and hope >> that this can be controlled. >> >> Thanks...martin > Yes. Subscribe to the "TPL_METAHEADERS_OUTPUT" event. You can add to > the event data, information used to construct <script></script> tags > for inclusion within the page's <head> ... </head> block. > On thinking about this some more, it may not work properly for syntax plugins. The wiki page is rendered after TPL_METAHEADERS_OUTPUT event has been triggered. This could mean the js is out of step from the page by one visit. Ie. it won't have the javascript the first time the page is viewed after adding the syntax and it will have the javascript one more time after the syntax has been removed from the page. For the googlemaps plugin, the first time some google map syntax is encountered, I include a script element in the page to load the (external) google map javascript. Each piece of google map syntax also generates its own script element which sets javascript variables. The plugin has its own javascript file included on every page - however the first line of its setup is a check to see if there are any googlemaps javascript variables set. If there aren't any, it exits straight away. Cheers, Chris -- -- DokuWiki mailing list - more info at http://wiki.splitbrain.org/wiki:mailinglist
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