Why does ie switch to quirks mode

The Quirks mode in Internet Explorer but not only is a compatibility mode that helps with the visualization of older pages, which are not compatible with the W3C standard.

The proper HTML5 syntax is as follows :. The following excerpt will also not trigger Quirks mode :. The following declarations will, however, trigger Quirks mode :.

The problem with the first declaration is that it is uncomplete. When I switched to IE standard 7, 8 or 9, everything was working fine. So in order to avoid Quirks mode activation, you should comply to few simple rules. My problem is just the opposite—I want IE8 to automatically switch to Quirks mode when I view the so-called "legacy" pages I've created over a period of several years. When viewed through IE8 Standard mode, all of the text I placed within tables is center-aligned—not aligned left, as I had intended.

This makes for amateur-appearing web pages, to say the least. While the Enterprise mode functionality provides great compatibility for you on Internet Explorer 8 or Internet Explorer 7, the new document mode capabilities can help you stay up-to-date regardless of which versions of Internet Explorer are running in your environment.

Therefore, we recommend that you start your testing process as follows:. Because you might have multiple versions of Internet Explorer deployed, you might have to use both Enterprise mode and document modes to effectively move to Internet Explorer In Internet Explorer 8, Microsoft introduced compatibility options to allow Internet Explorer to act as if it were Internet Explorer 7. This change lets users view both fully compliant sites and compatibility views of web content that required Internet Explorer 7.

This has been extended up to and including Internet Explorer 11 in order to support the Compatibility View feature - or, at least, document modes. Failing to declare a! When you specify the version for example, Internet Explorer 7 , you set a requirement that the page must use the Internet Explorer 7 Standards mode.

Officially, the rules for rendering a webpage are evaluated in the following order by Internet Explorer:. For details about how document modes are manipulated, see Deprecated document modes and Internet Explorer For more general information about document modes, see Document Modes.

Download Microsoft Edge More info. Contents Exit focus mode. The following rules determine how Internet Explorer selects the document mode: 1. Is this page helpful?

Yes No. Active 7 years, 4 months ago. Viewed 18k times. Improve this question. Benson Benson 41 1 1 gold badge 2 2 silver badges 8 8 bronze badges. Why do you have two doctypes? I test both but none is working. I coding using masterpage aspx — Benson. Certain doctypes trigger certain rendering modes msdn. For best results, use just the HTML5 doctype.

Also encountered similiar problem, this post helped me: stackoverflow. Add a comment. Active Oldest Votes. Improve this answer. Community Bot 1 1 1 silver badge.