Xhtml

What is XHTML? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Why XHTML? ,[object Object],[object Object],[object Object],[object Object],[object Object]

How is XHTML better than HTML? ,[object Object],[object Object],[object Object],[object Object],[object Object]

Differences Between XHTML and HTML ,[object Object],[object Object],[object Object],[object Object],[object Object]

Elements Must Be Properly Nested ,[object Object],[object Object],[object Object],[object Object],[object Object]

Documents Must Be Well-formed ,[object Object],[object Object],[object Object],<html> <head> ... </head> <body> ... </body> </html>

Tag Names Must Be in Lower Case ,[object Object],[object Object],[object Object]

All XHTML Elements Must Be Closed ,[object Object],[object Object],[object Object],This is a break<br /> Here comes a horizontal rule:<hr />Here's an image <img src="happy.gif" alt="Happy face" />

XHTML Syntax ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Attribute Minimization is Forbidden

The id Attribute replaces the Name Attribute ,[object Object],[object Object],[object Object],[object Object]

Mandatory XHTML Elements ,[object Object],[object Object],<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>... </title> </head> <body> ... </body> </html>

XHTML Document Type Definitions (DTD) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The 3 Document Type Definitions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

XHTML Validation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

W3C Recommendations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

… W3C Recommendations ,[object Object],[object Object],[object Object],[object Object],[object Object]

… W3C Recommendations ,[object Object],[object Object],[object Object],[object Object]

Xhtml

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Xhtml