How do I execute a page-defined JavaScript function from a Firefox extension?
问题 I'm creating a Firefox extension for demo purposes. I to call a specific JavaScript function in the document from the extension. I wrote this in my HTML document (not inside extension, but a page that is loaded by Firefox): document.funcToBeCalled = function() { // function body }; Then, the extension will run this on some event: var document = Application.activeWindow.activeTab.document; document.funcToBeCalled(); However it raises an error saying that funcToBeCalled is not defined. Note: I