FireFox extension: How to access page element via jQuery?

Question

I am using following code:

   var myExtension = {
    init: function() {
        // The event can be DOMContentLoaded, pageshow, pagehide, load or unload.
           


        

Answer 1

$() will use the document of the current window by default. Which is actually browser.xul in your case. You need to operate on the sub-document, which you already got via var doc = aEvent.originalTarget;, so this should work I think (untested)

$(doc).find("#blueBar")