What Are Predefined Attribute Values

Q

What Are Predefined Attribute Values? - XHTML Tutorials - Introduction To Tag and Attribute Syntax

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A

Some XHTML attributes have predefined values. If an attribute has predefined values, you must use one of the predefined values.

For example, attribute "valign" of element "td" has 4 predefined values "baseline", "bottom", "middle", and "top". Here are some examples of how to use "valign" attribute:

<td valign="top"> - Valid, "top" is one of the predefined values of "valign".
<td valign="center"> - Invalid, "center" is not a predefined value of "valign".

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What Are Predefined Attribute Values
What Are Predefined Attribute Values? - XHTML Tutorials - Introduction To Tag and Attribute Syntax Some XHTML attributes have predefined values. If an attribute has predefined values, you must use one of the predefined values. For example, attribute "valign" of element "td" has 4 predefined values "... 2007-05-12, 5622👍, 0💬

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