Is Attribute Name Case Sensitive

Home > XHTML

Q

Is Attribute Name Case Sensitive? - XHTML Tutorials - Introduction To Tag and Attribute Syntax

✍: FYIcenter.com

A

Yes, 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.

2007-05-12, 5704👍, 0💬

How To Enter Element Content
How To Enter Element Content? - XHTML Tutorials - Introduction To Tag and Attribute Syntax Most of XHML elements allow you to specify contents. But there are some XHTML elements that do not allow any contents. If an XHTML element does allow element content, you need to enter the content between the ... 2007-05-12, 6022👍, 0💬

How To Quote Element Attribute Values Properly
How To Quote Element Attribute Values Properly? - XHTML Tutorials - Introduction To Tag and Attribute Syntax You know that attribute values must be quoted. But how to attribute values properly? Here are some basic rules you should remember: An attribute value must be quoted. An attribute value can b... 2007-05-12, 5859👍, 0💬

How To Write Element Attributes Properly
How To Write Element Attributes Properly? - XHTML Tutorials - Introduction To Tag and Attribute Syntax If an attribute is allowed for an XHTML element, you must write the attribute inside the opening tag of this element. Here are some rules on writing element attributes: An attribute must have a nam... 2007-05-12, 5805👍, 0💬

How To Write Ampersand Sign in Attribute Values
How To Write Ampersand Sign in Attribute Values? - XHTML Tutorials - Introduction To Tag and Attribute Syntax If you need enter an ampersand sign in an attribute value, you can not enter it directly. You must replace it with entity: &amp;. Here are some interesting examples of quoted attribu... 2007-05-12, 5799👍, 0💬

What Is a Required Attribute
What Is a Required Attribute? - XHTML Tutorials - Introduction To Tag and Attribute Syntax A required attribute is an attribute required by the XHTML element. When you write an XHTML element, you must include all attributes required by this element in the opening tag. Optional attributes can be omit... 2007-05-12, 5719👍, 0💬

Is Attribute Name Case Sensitive
Is Attribute Name Case Sensitive? - XHTML Tutorials - Introduction To Tag and Attribute Syntax Yes, 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... 2007-05-12, 5705👍, 0💬

What Is Wrong with My <meta> Tags
What Is Wrong with My <meta> Tags? - XHTML Tutorials - Introduction To Tag and Attribute Syntax If you are converting existing HTML documents to XHTML format, you may find some <meta> tags are written as: <meta name="Author" content="FYICenter.com"&gt ;<... 2007-05-12, 5648👍, 0💬

What Is Wrong with My "checked" Attribute Values
What Is Wrong with My "checked" Attribute Values? - XHTML Tutorials - Introduction To Tag and Attribute Syntax Attribute "checked" is an optional attribute for XHTML element "input". In XHTML specification, attribute "checked" has only predefined value: "checked". However, in HTML specification, att... 2007-05-12, 5632👍, 0💬

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, 5443👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.