Thanks for providing this test case, though it's not clear to me that anything unexpected is occurring. I'm viewing the test case in Chrome - is your issue browser specific?

I can reproduce it only in IE7. I have also tested it with Firefox, Chrome, IE8 and IE9, in those browsers it works fine.

I now also tested it with jQuery 1.5.2 and with that version it also works fine in IE7 so this is a 1.6.x - specific bug.

Yep, it's a strange one, reduced here:

http://jsfiddle.net/dmethvin/ZEuwq/

It doesn't seem to be related to the id and name being the same, as the reduced test case shows. Also strange that it *doesn't* fail in IE6, only IE7.

@dmethvin I've just run this in IE7 and it doesn't seem to be reproducing...

http://gyazo.com/59266d566d42dcb2b8d980757e01bf2e.png

EDIT: I foolishly missed the part about uncommenting a piece of code that was meant to reproduce the bug. Silly me.

Did you remember to uncomment the line that access the element's name-attribute?

Ugh... why would you write a test that isn't _just_ runnable?

No idea, ask dmethvin who rewrote the test case. :-)

Triage confirmed. http://jsfiddle.net/rwaldron/6VJbe/

Here is a workaround if someone stumbles on this bug. It overwrites the attr-function with a version that checks if the browser is MSIE7 (or older version) and then directly gets the name attribute from the DOM-element.

(function($) {
	//Make a closure of the original function
	var originalMethod = jQuery.fn.attr,
		isIE7 = (jQuery.browser.msie && jQuery.browser.version < 8);
		
	jQuery.fn.extend({
		attr: function(name) {	
				//If browser is MSIE7 (or older IE) and we are trying to get the name-attribute
				if (isIE7 && arguments.length === 1 && name === 'name') {
					var $that = jQuery(this);
					return ($that.length) ? $that[0].name : undefined;
				//Otherwise just return the original function
				} else {
					return originalMethod.apply(this, arguments);
				}
		}
	});
})();

Fix #9646. Cloned nodes shouldn't affect original in IE7. Close gh-947.

Changeset: 13651f296d14b2400d703d1945065c0373862eb5