$('option').attr('selected', true) does not work on IE6

[kanonji]

jQuery version

Error occurs

1.7.0 1.7.1 1.7.2

I tried

1.7.0 1.7.1 1.7.2

Browser

• Error occurs on IE6.
• No any errors on Chrome 18.0.1025.142

OS

• Windows XP

Test case

 http://jsdo.it/kanonji/oqyJ

Description

If there are no option element when the html is loaded, $('option').attr('selected', true) does not work on IE6.

Step by step

Does not work

1. Open IE6
2. Select element with no option element like '<select></select>' on the html.
3. Append/prepend some option elements with jQuery in the select element.
4. attr('selected', true) for the option element appended step 3 above
5. The error occurs.

work

1. Open IE6
2. Select element with some option elements.
3. Do nothing or $('select').empty().
4. Append/prepend some option elements with jQuery in the select element.
5. attr('selected', true) for the option element appended step 4 above
6. Work.

[dmethvin]

The site jsdo.it does not work for me in IE6. This JSFiddle reproduces the issue:

 http://jsfiddle.net/dmethvin/SVTUm/

This is a well-known issue with IE6 being unable to update options, and can be fixed with setTimeout or one of the solutions suggested in the links below:

 http://jsfiddle.net/dmethvin/SVTUm/1/

Because it is a timing issue it can't be fixed within jQuery core without introducing even more issues (e.g., what if other things run before we select the option in the timeout?)

 http://stackoverflow.com/questions/779379/why-does-settimeoutfn-0-sometimes-help

 http://stackoverflow.com/questions/3737128/jquery-select-option-list-not-updated-fast-enough-in-ie6