Steps to recreate :

• http://paul.slowgeek.com/nodeSelector/dev/bad-unbind.html
• Click the "Add key listener"
• Press keys and notice they are printed
• Press ESC and see it says "unbinding"
• Press more keys and see they AREN'T printed
• Click the "add key listener" again
• Press keys and see they ARE printed
• Press ESC and see it says "unbinding"
• Press keys and see they ARE printed (this is the bad part)

If I change the javascript code to NOT add the jQuery library, then it works as expected.

Pasting Code incase my site is down:

--- bad-unbind.html

<a href='

javascript:(

function() {

var s=document.createElement("script");

s.charset="UTF-8";

s.src="bad-unbind.js";

document.body.appendChild(s)

})();

'>Add key listener</a>

<p id='key'></p>

--- end

--- bad-unbind.js

addLibs = function () {

if (typeof(document.body) == "undefined" || document.body == null) {

setTimeout(addLibs, 100);

return;

}

This line makes it work

if (typeof($) == "undefined") {

node = document.createElement("script");

node.src = "http://jqueryjs.googlecode.com/files/jquery-1.3.2.min.js";

document.body.appendChild(node);

}

addEvents();

}

addEvents = function () {

if (typeof($) == "undefined" || $("*") == null) {

setTimeout(addEvents, 100);

return;

}

var keydown = function(e) {

if (e.keyCode == undefined && e.charCode != undefined) e.keyCode = e.charCode;

$("#key").html("keydown " + e.keyCode);

Escape key

if (e.keyCode == 27) {

$("#key").html("unbinding");

$(document).unbind("keydown", keydown);

}

};

$(document).keydown(keydown);

}

addLibs();

--- end