XHTML Atributes

XHTML attributes are HTML attributes written as XML

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XHTML Attributes - Syntax Rules

• Attribute names must be in lower case
• Attribute values must be quoted
• Attribute minimization is forbidden

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Attribute Names Must Be In Lower Case

This is wrong:

<table WIDTH="100%">

This is correct:

<table width="100%">

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Attribute Values Must Be Quoted

This is wrong:

<table width=100%>

This is correct:

<table width="100%">

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Attribute Minimization Is Forbidden

This is wrong:

<input checked>
<input readonly>
<input disabled>
<option selected>

This is correct:

<input checked="checked" />
<input readonly="readonly" />
<input disabled="disabled" />
<option selected="selected" />