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Question

Hovering rows in a table in Internet Explorer is slow with any doctype

Answer 1

A:

The doctype:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;

along with the CSS :hover state provide the best results in IE8. (see this page)

Remember, IE9 is right around the corner, and may resolve many of these quirks.

Evan Mulawski 2010-10-21 18:39:22

The javascript-based test cases linked above have the same performance characteristics in IE9 beta - quirks mode is fast, standards mode sucks. And this is IE9 standards mode, not emulating an older version.

Joel Mueller 2010-10-22 21:55:14

New web pages have no need, and should not use, the transitional doctype. What are you transitioning from? Always use strict.

Rob 2010-10-23 14:05:53

Answer 2

A:

While changing the doctype may display the issue, the issue is not caused by the doctype. I can only suspect it's caused by javascript but you have some validation issues you need to address first. Validate your HTML for that list of errors.

Rob 2010-10-23 14:04:37

I changed the strict example now to html5, and it validates correctly now. Makes no difference whatsoever... If I change the rendering mode to IE7 (in Internet Explorer 8) the hovering is lightning fast.

Dylan 2010-10-23 18:17:38

Quit messing with the doctype! It's the very first thing that goes on a page and NEVER changes. It should have NO affect on how the browser handles this but we're talking about IE here and you can never trust IE to do anything right.

Rob 2010-10-23 18:25:35

Changed it to xhtml strict, removed the javascript and changed the hovering to css :hover . Still very slow in IE8.

Dylan 2010-10-23 18:35:56

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Hovering rows in a table in Internet Explorer is slow with any doctype

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