Question

I’m a bit stumped on why this isn’t working. I’m trying to get the title of a document that’s loading in the browser. Unfortunately my code is producing a weird error.

let lg = Components.classes["@mozilla.org/consoleservice;1"].getService(Components.interfaces.nsIConsoleService);

window.addEventListener("load", function p7Foxload() {

    window.removeEventListener("load", p7Foxload, false);

    gBrowser.addEventListener("DOMContentLoaded", function(event){
        if(event.originalTarget instanceof HTMLDocument) {
            lg.logStringMessage(event.originalTarget.getAttribute('title'));
        }
    }, false);

}, false);

It gives me the following error:

event.originalTarget.getAttribute is not a function

I don’t understand why it’s saying the getAttribute method is not a function.

Answer 1

That’s because a HTMLDocument just doesn’t have it. Use event.originalTarget.title instead.