What does xhtml 1.0 strict mean

As for the XML declaration throwing IE into quirks mode, I am well aware of this as well, and have spent considerable time testing to ensure that the various versions of IE deliver my content with reasonably consistent design fidelity.

If you do not serve XML, what is the point of starting with a xml declaration? Perhaps is not really a fix, its more less of a workaround. But our friend IE may someday… be compatible with the world instead of being compatible with their own rules. Thanks for the heads up on this technique, Themis.

Interestingly enough, another reader recently sent a link to the exact same article. In the past, I have tried to implement various types of content negotiation, but so far have been unable to achieve the desired result. After digesting the article, I will experiment further and hopefully devise a suitable solution.

Then, one day, when IE is either fixed or dead, just add in the xml declaration to the headers of your sites, and voila. Main Menu. When the elements are not present, many browsers render using browser-specific rules that vary among browser types which is sometimes referred to as rendering in "quirks mode" , and can therefore result in unpredictable rendering.

Similarly, you can control the MIME type of the page. However, you can override the page's MIME type by setting the ContentType attribute in the Page directive, as shown in the following code example. The form element does not contain an action attribute because the action attribute is added when the page is rendered. The formatting properties of the Label control will render as style attributes. Because the script element containing server script is not rendered to the browser, it does not require a type attribute.

The page renders client script at runtime to enable the auto-postback behavior of the ListBox control, but the page renders the script in an XHTML-compatible manner. For example, an ASP. You can check your pages by validating them, as explained in the next section.

After creating your ASP. If the page contains ASP. To check the validity of the XHTML for your pages, you must use a service that runs the page and checks its output. A typical strategy is to deploy your pages to a publicly available server. The server can be a test server; it does not have to be a production server. However, it must be open to the Internet. You can then use a validation service that can read your pages programmatically.

To use this validator, enter the URL of the page that you want the service to check. The validation site requests the page and produces a report of any errors that it finds. Alternatively, you can save the source for a Web page and submit it as a file to the validation service. For more information about this validation service, see the W3C Web site.

If the page that you are checking contains dynamic content, or if users can personalize Web pages in your site, you must be sure to test pages with different content to be sure all possible content in the page is valid. In some cases, this can be difficult because the variation in possible page output is too great to be able to test effectively. When a page is processed, ASP. NET examines information in the request about the current browser, and based on the browser type user agent string , renders markup that is appropriate for that browser.

For more information, see ASP. There are however two major modes in most browsers some browsers have an almost standards mode too :.

You can use the non-standard document. BTW: the recommendation or, what looked like a recommendation in the other answer is broken, the transitional DTD should not be used on new documents. Always use strict the term "strict" is kind of misleading, should be "default" or something else non-scary , period:.

We recommend that authors write documents that conform to the strict DTD rather than the other DTDs defined by this specification. And there are many blog post about this, e. This post started out with pointing out that browsers don't care what you choose, and then developed into a rant about how to choose the correct DTD, interesting This answer to "any reason not to start using the HTML 5 doctype?

Python Javascript Linux Cheat sheet Contact. What are the different doctypes in html and what do they mean? Rendering Modes Early web browsers were very buggy.

Choosing a Doctype There are two factors to consider when selecting a Doctype: Does it trigger standards mode? For new pages it should , times when you need to be compatible with browsers which don't support standards mode are very rare today. Does it support the features I need? Strict doctypes avoid most features that should be handled with CSS.