XHTML V/S HTML - Alien Programmer

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HTML and XHTML are both markup languages used to create web pages. While HTML is the older of the two, XHTML was designed as a stricter, more standardized version of HTML.

HTML, or Hypertext Markup Language, is the markup language used to create web pages. HTML was first introduced in 1990, and has gone through several different versions since then. HTML allows developers to create web pages with text, images, video, and other media types.

XHTML, or Extensible Hypertext Markup Language, is a stricter, more standardized version of HTML. XHTML follows the rules of XML, which means that it has stricter syntax rules than HTML. In addition, XHTML requires that all elements be properly nested, and that all tags be closed.

There are a few key differences between HTML and XHTML that developers should be aware of. For one, XHTML requires that all tags be lowercase, while HTML allows both uppercase and lowercase tags. In addition, XHTML requires that all tags be properly closed, while HTML allows some tags to be left open.

Here are a few other key differences between HTML and XHTML:

XHTML requires that all elements be properly nested, while HTML allows some elements to be loosely nested.
XHTML requires that all attributes be quoted, while HTML allows some attributes to be unquoted.
XHTML requires that all elements have a closing tag, while HTML allows some elements to be self-closing.

Despite these differences, many web developers still use HTML to create their web pages. HTML is easier to learn than XHTML, and it allows for more flexibility in terms of syntax. However, if you are creating a new website, or if you are updating an older website, you may want to consider using XHTML instead of HTML.

Here are a few tags that are commonly used in both HTML and XHTML:

<html>: The opening tag for an HTML or XHTML document.
<head>: Contains information about the document, such as the title and meta tags.
<title>: Specifies the title of the document, which is usually displayed in the browser’s title bar.
<body>: Contains the content of the document, such as text, images, and video.
<p>: Specifies a paragraph of text.
<a>: Specifies a hyperlink to another web page or document.
<img>: Specifies an image to be displayed on the web page.

In summary, HTML and XHTML are both markup languages used to create web pages. While HTML is the older of the two, XHTML was designed as a stricter, more standardized version of HTML. XHTML requires stricter syntax rules than HTML, but it also provides more structure and standardization.

here are some examples of HTML and XHTML tags:

HTML:

html

<!DOCTYPE html>
<html>
  <head>
    <title>My HTML Page</title>
  </head>
  <body>
    <h1>Welcome to my HTML page</h1>
    <p>This is some sample text.</p>
  </body>
</html>

XHTML:

html

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
  <head>
    <title>My XHTML Page</title>
  </head>
  <body>
    <h1>Welcome to my XHTML page</h1>
    <p>This is some sample text.</p>
  </body>
</html>

HTML Uniform Resource Locators