HTML and CSS Reference
In-Depth Information
accept-charset CDATA #IMPLIED
This example associates seven attributes with the form element. The ac-
tion attribute is required and accepts a character string value. The meth-
od attribute has one of two values, either get or post . get is the default,
so if the document author doesn't include the method attribute in the form
tag, the XML parser assumes method=get automatically.
The enctype attribute for the form element accepts a character string
value and, if not specified, defaults to a value of application/x-www-form-
urlencoded . The remaining attributes all accept character strings, are not
required, and have no default values if they are not specified.
If you look at the attribute list for the form element in the HTML DTD,
you'll see that it does not exactly match our example. That's because
we've modified our example to show the types of the attributes after any
parameter entities have been expanded. In the actual HTML DTD, the
attribute types are provided as parameter entities whose names give a
hint of the kinds of values the attribute expects. For example, the type
of the action attribute appears as %URI; , not CDATA , but elsewhere in the
DTD is defined to be CDATA . By using this style, the DTD author lets you
know that the string value for this attribute should be a URL, not just
any old string. Similarly, the type of the onsubmit and onreset attributes
is given as %Script . This is a hint that the character string value should
name a script to be executed when the form is submitted or reset.
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