Forcing IE7 into standards rendering mode (not quirks)
I'm having display issues in IE7 due to it rendering in quirks mode. I've confirmed this by d开发者_JAVA技巧isplaying "document.compatMode" and getting back "BackCompat" as opposed to "CSS1Compat". Using IE8 and reverting to IE7 works, because that keeps it out of quirks. In plain IE8 I have it fixed by forcing the rendering mode with the X-UA-Compatible header, but this does not work for IE7. The other browsers also display in quirks, but unlike IE this does not put them into pseudo-IE5.5 mode, so they still render fine.
How can I force IE7 to render in standards rendering mode and not quirks? I've tried setting the DOCTYPE to a number of different options and I'm not adding the xml prologue. Thanks in advance for any replies.
Did you try to the XHTML 4 strict DTD ?
<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml/DTD/xhtml1-strict.dtd">
Also beware that if there is anything before that DTD declaration, IE7 will still stay in quirk mode.
In other words:
IE7: strict
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
or
<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
IE7: quirk
<?xml version="1.0" encoding="UTF-8"?>
<!-- stuff -->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
Where it gets nasty is that : IE6 takes the following as Quirk mode.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
Have you run your code through the W3C validator?
If you have invalid HTML, IE may revert to quirks mode regardless of the doctype.
加载中,请稍侯......
精彩评论