Question

I’m trying to write a Greasemonkey script. There is something like this in a webpage:

<div id="div1" class="..." title="
  asdsadsadasd&nbsp;&lte;...
">...</div>

I want to get its title using jQuery attr method. But it returns an empty value. My js code is like this:

$("#div1").attr("title");

I’ve tried alert in many different ways and I’m sure that the required element is selected properly and all other attributes are fine! Just this one returns empty string! ( ” ) Does it have something to do with being multiline?

More details:
I’m using latest jQuery (1.8.2) and my browser is Firefox 16.0.1.
I saw this link and it worked there! So maybe it’s because something else. Actually I’m coding in a Greasemonkey script which is altering a webpage that is not mine to edit. So editing the HTML code is not possible.

Answer 1

The title is blank because it (or most likely the <div>) is added via AJAX, after the Greasemonkey script fires.

Use the waitForKeyElements() utility to handle this kind of situation.

Here is a complete script that uses jQuery and waitForKeyElements to grab that title:

// ==UserScript==
// @name     _Grab element's title, when it is added by AJAX
// @include  http://YOUR_SERVER.COM/YOUR_PATH/*
// @require  http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js
// @require  https://gist.github.com/raw/2625891/waitForKeyElements.js
// @grant    GM_addStyle   
// ==/UserScript==
/*- The @grant directive is needed to work around a design change introduced
    in GM 1.0.   It restores the sandbox.
*/

function grabDivTitle (jNode) {
    //***** YOUR CODE HERE *****
    var titleStr    = jNode.attr ("title");
    console.log ("Title is:", titleStr);
}

waitForKeyElements ("#div1", grabDivTitle);