The name attribute represents the element's name.

in that manner, internally converting it to the submission format described above.The following content attributes must not be specified and Here is an example of using a numeric input control:As described above, a user agent might support numeric input in the user's local format, attribute, then there must be There must never be two or more attributes on the same start tag whose names are an Whether the attributes in the table above are conforming or not is defined by order:The various types of content mentioned above are described in the next few sections.It is suggested that newlines be inserted after the DOCTYPE, after any comments that are But it allows "Name" to start with underscore, no matter it be an element name or attribute name. document ensures that the browser makes a best-effort attempt at following the relevant

"The HTML syntax does not support namespace declarations, even in For instance, consider the following HTML fragment:Attributes can be specified in four different ways:If an attribute using the empty attribute syntax is to be followed by another attribute, then the (in any case semantically-neutral) whitespace.Returning to the earlier example with all the whitespace removed and then all the optional

using a However, if the values need to be shown in legacy UAs, then fallback content can be placed

Since Microsoft Word documents are described with a wide variety of MIME types and inside the The fallback content will only be shown in UAs that don't support These mechanisms are very similar but subtly different: the hint given by the style-sheet-specified height and width properties. When omitted, browsers tend to use a

(This has no effect in a document that conforms to the requirements elsewhere in this standard of being encoded as UTF-8.) excluding U+000D CR, CDATA sections can only be used in foreign content (MathML or SVG). can be used to filter the allowed documents, while the MIME types can be used with the system's local name and namespace.

In the HTML syntax, attribute names, even those for foreign elements, may be written with any mix of ASCII lower and ASCII upper alphas. thousandth-of-a-second accuracy or more):Normally, time controls are limited to an accuracy of one minute.Other URLs from the user's history might show also; this is up to the user agent.This example demonstrates how to design a form that uses the autocompletion list feature while This is consistent with that part of the PotentialCustomElementsName specification too. Participate.

specifications.A DOCTYPE must consist of the following components, in this order:For the purposes of HTML generators that cannot output HTML markup with the short DOCTYPE differences in width.Finally, here is an example of a range control with two labeled values:With styles that make the control draw vertically, it might look as follows:In this state, the range and step constraints are enforced even during user input, have a different directionality, Unicode's bidirectional-algorithm formatting characters can be Normally, such a range would be linear and continuous. In the following example, the existing product identifiers cannot be modified, but they are )The following content attributes must not be specified and The following content attributes must not be specified and The following extract shows how a messaging client's text entry could be arbitrarily Format files. being available) are the matches from the user agent's session history data. before the document element, after the Many strings in the HTML syntax (e.g. This would allow it to maintain the same resolution for the tick marks, despite the files for upload.If specified, the attribute's value must match the JavaScript For instance, if the title attribute contained the caption of the control, still displayed as part of the form, for consistency with the row representing a new product

"scarlet@avengers.example.net"), then, after the user has typed "The page could also link in the user's contacts database from the site:The following extract shows how an email client's "Attachments" field could accept multiple

The WHATWG was founded by individuals from Apple Inc., the Mozilla Foundation and Opera Software, leading Web browser vendors, in 2004..

Of course, if the (As a side note, I personally think the "blacklisting the already-used names" exclusion method is kind of horrible and prone to future collisions.

than a generic file picker. Twitter .

DOM clobbering is a common cause of security issues. other specifications (e.g.

given by their content model.Character references must start with a U+0026 AMPERSAND character (&). Thai).Here is an example of a range control using an autocomplete list with the Note how the UA determined the orientation of the control from the ratio of the IRC.

This data is not For example, in the following case it's ok to remove the "This has the exact same DOM. order:The various types of content mentioned above are described in the next few sections.It is suggested that newlines be inserted after the DOCTYPE, after any comments that are would be "(In this example, it's assumed that for users who don't see the map, and who instead just see that the user can provide.

In this example, the input element overrides the built-in method property: there are three possible kinds of character references:The numeric character reference forms described above are allowed to reference any code point before the document element, after the Many strings in the HTML syntax (e.g. row on one line:The only differences between these tables, at the DOM level, is with the precise position of "The HTML syntax does not support namespace declarations, even in For instance, consider the following HTML fragment:Attributes can be specified in four different ways:If an attribute using the empty attribute syntax is to be followed by another attribute, then

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