Attribute Name Case Sensitive

Home > HTML

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.

Â

â‡’HTML Tag and Attribute Syntax

â‡’â‡’HTML Tutorials

2017-02-20, 957👍, 0💬

HTML Tutorials
Where to find tutorials on HTML language? I want to know how to learn HTML. Here is a large collection of tutorials to answer many frequently asked questions compiled by FYIcenter.com team about HTML language: Introduction of HTML What Is HTML? HTML Versions and Variations HTML Document Example XHTM... 2017-02-20, 2401👍, 0💬

Introduction of HTML Element Content Syntax
Where to find tutorials of introduction to HTML element content syntax and basics rules? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team in introduction to HTML element content syntax and basics rules. Clear answers are provided with tutorial exer... 2017-07-30, 1326👍, 0💬

HTML Versions and Variations
What are versions and variations of the HTML starndard? HTML was developed by Tim Berners-Lee in 1980. Since then, a number of versions and variations of the HTML standard were published: HTML 5.1 was published as a W3C Recommendation on November 1, 2016. HTML5 was published as a W3C Recommendation ... 2017-02-20, 1312👍, 0💬

HTML Element Content Models
What Are the HTML Element Content Models? There are 4 content models defined for HTML elements: 1. EMPTY - No content. Nothing between the opening tag and the closing tag. For example: <br/> - "br" element has no content. <br></br& amp;gt;- Same as above. <m... 2017-07-30, 1272👍, 0💬

Incorrect HTML 'head' Element
What Is Wrong with This XHTML "head" Element? If you have trouble passing the XHTML 1.0 validation on your head element, check the following common mistakes: Missing the title element. Not closing the meta element as <meta ... >. You must close all elements in XHTML documents. Not clos... 2017-06-28, 1271👍, 0💬

Technical Specifications for File Upload in PHP
How To Get the Technical Specifications for File Upload in PHP? File upload technical specifications is provided in "Form-based File Upload in HTML - RFC 1867". You can get a copy from http://www.ietf.org/rfc/rfc186 7.txt. ⇒ PHP Tutorials ⇐ Configuration Settings for File Upload in PHP ⇑ Upload... 2016-10-14, 1262👍, 0💬

Introduction of HTML
Where to find tutorials in understanding what is HTML? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team in understanding what is HTML. Clear answers are provided for frequently asked questions on what is HTML, HTML5, XHTML, Web, HTTP, XML, URL, URI... 2017-02-20, 1249👍, 0💬

The 'checked' Attribute of some HTML Elements
What Is Wrong with My "checked" Attribute Values? Attribute "checked" is an optional attribute for HTML element "input". In XHTML specification, attribute "checked" has only one predefined value: "checked". However, in HTML specification, attribute "checked" requires no value. If you are converting ... 2017-07-30, 1210👍, 0💬

HTML Document Example
What Does an HTML document look like? An HTML document is a normal text file with predefined tags mixed with the text contents of the document. Tags are enclosed in pairs of angle brackets: "<" and ">". Below is how a simple HTML document looks like if you open it in a text editor: &am... 2017-02-20, 1200👍, 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.