XHTML - Elementer

XHTML elements are HTML elements written in XML format.

XHTML element - Syntax rules

  • XHTML elements mustcorrectly nested
  • XHTML elements must alwaysclosed
  • XHTML elements mustlowercase
  • An XHTML document must haveA root element

XHTML elements must be correctly nested

In HTML, some elements can be incorrectly nested with each other, like this:

<b><i>This text is bold and italic</b></i>

In XHTML, all elements must be correctly nested with each other, like this:

<b><i>This text is bold and italic</i></b>

XHTML elements must always be closed

This is wrong:

<p>This is a paragraph
<p>This is another paragraph

This is correct:

<p>This is a paragraph</p>
<p>This is another paragraph</p>

Empty elements must also be closed

This is wrong:

A break: <br>
A horizontal rule: <hr>
An image: <img src="happy.gif" alt="Happy face">

This is correct:

A break: <br />
A horizontal rule: <hr />
An image: <img src="happy.gif" alt="Happy face" />

XHTML elements must be lowercase

This is wrong:

<BODY>
<P>This is a paragraph</P>
</BODY>

This is correct:

<body>
<p>This is a paragraph</p>
</body>