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Select box size change crashes IE11

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    I'm the lead developer for CarComplaints.com, woke up this morning to a ton of emails from IE11 users complaining that clicking on our select boxes crashes the browser.

    The affected dropdowns start with the select box size set to show multiple options, & then we set the select box's size attribute back to 1 with an onchange event. Pretty basic.

    I narrowed the problem down to this: http://jsfiddle.net/8GT7u/

    For a workaround, I found if I change the code so the size is set within a setTimeout(), then IE11 handles it without crashing. Any suggestions or other workarounds?


    Tuesday, December 31, 2013 8:37 PM
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    For a workaround, I found if I change the code so the size is set within a setTimeout(), then IE11 handles it without crashing. Any suggestions or other workarounds?

    The best, or the easiest workaround on this issue, (reusing code given by Mr. Max) is to:

    <!DOCTYPE html>
<html>
<head>
	<title>select size 1</title>
	<meta charset="utf-8">
</head>
<body>
	<select size=2 onclick="this.size=1">
		<option selected>click on me</option>
		<option>or me!</option>
	</select>
</body>
</html>

    and preserve the "onchange" event for something else.

    p.s.: your fiddle updated with this workaround is here: http://jsfiddle.net/8GT7u/3/

    Wednesday, January 01, 2014 3:46 AM
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    For a workaround, I found if I change the code so the size is set within a setTimeout(), then IE11 handles it without crashing. Any suggestions or other workarounds?

    The best, or the easiest workaround on this issue, (reusing code given by Mr. Max) is to:

    <!DOCTYPE html>
<html>
<head>
	<title>select size 1</title>
	<meta charset="utf-8">
</head>
<body>
	<select size=2 onclick="this.size=1">
		<option selected>click on me</option>
		<option>or me!</option>
	</select>
</body>
</html>

    and preserve the "onchange" event for something else.

    p.s.: your fiddle updated with this workaround is here: http://jsfiddle.net/8GT7u/3/

    Wednesday, January 01, 2014 3:46 AM
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    That's perfect, very clean solution. Thanks, I appreciate it!

    • Edited by CarComplaints dot com Wednesday, January 01, 2014 1:04 PM whoops didn't realize you meant the other reply by "Mr. Max"
    Wednesday, January 01, 2014 12:10 PM
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    Why thank you :)   We always start out with an select box open to show multiple options with none selected, so any click is fine .... I think anyway, couldn't find any situations where onclick vs onchange made a difference with our use case.
    Wednesday, January 01, 2014 4:34 PM
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    For what it's worth, anyone (everyone) also experiencing this IE11 crash, please go to the "Internet Explorer Feedback" site & use the search feedback box to find these 2 bug reports:

    812635, 811718

    .. for each, find the "X users can reproduce this bug" section in the middle & click on "I can too".

    (Sorry, MSDN won't let me post links yet)
    Thanks!
    Wednesday, January 01, 2014 6:40 PM
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    Re the "change keyup" combo, there was some browser/version awhile back that didn't fire a "change" event when the keyboard arrows were used to pick the select object option. You had to use the combo of change + keyup events to handle it properly.

    Normally I could look back in Git (our code revision tracking system) for the commit notes on that, but we switched to Git in 2010 & our use of that event combo code pre-dates that... it's probably not required anymore, but who knows. Anyone else remember which browser/version made that code necessary?

    Wednesday, January 01, 2014 7:42 PM
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