Attribute Name Case Sensitive

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Q

Is Attribute Name Case Sensitive?

✍: FYIcenter.com

A

Yes, XHTML attribute names are case sensitive. You must write all attribute names in lower case letters.

Here are some valid and invalid attribute names:

<a href="http://dev.fyicenter.com"> - Valid attribute name.
<a HREF="http://dev.fyicenter.com"> - Invalid attribute name, must use lower case letters.
<script Type="text/javascript"> - Invalid attribute name, must use lower case letters.

Note to HTML document authors: HTML element attribute names are not case sensitive. But XHTML element attribute names are case sensitive. If you are converting existing HTML documents to XHTML documents, you will get a lots of syntax errors about upper case letters used in HTML attributes.

⇒ Quoting HTML Element Attribute Values

⇐ Writing HTML Element Attributes

⇑ HTML Tag and Attribute Syntax

⇑⇑ HTML Tutorials

2023-09-23, 1552🔥, 0💬

XHTML Element Name Case Sensitive
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Attribute Name Case Sensitive
Is Attribute Name Case Sensitive? Yes, XHTML attribute names are case sensitive. You must write all attribute names in lower case letters. Here are some valid and invalid attribute names: <a href="http://dev.fyicenter.com ">- Valid attribute name. <a HREF="http://dev.fyicenter.c.. . 2023-09-23, ∼1553🔥, 0💬

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