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Understanding the Differences Between HTML and XHTML

HTML (HyperText Markup Language) is the standard language used to create and design webpages. It is flexible in syntax, allowing for some errors such as unclosed tags or attribute values without quotes.

XHTML (Extensible HyperText Markup Language) is a stricter and cleaner version of HTML that follows the syntax rules of XML. It enforces proper closing of tags, case sensitivity (all elements must be in lowercase), and properly quoted attributes, making it more consistent and easier to parse.

Key Differences Between HTML and XHTML

• Syntax Strictness: XHTML requires all tags to be properly closed, whereas HTML is more lenient.
• Case Sensitivity: XHTML elements and attribute names must be in lowercase; HTML is case-insensitive.
• Attribute Quotation: XHTML requires attribute values to be enclosed in quotes; HTML can accept unquoted values.
• Document Structure: XHTML documents must be well-formed XML documents and must have a proper DOCTYPE declaration.
• Error Handling: Browsers are forgiving with HTML errors but will reject or improperly render faulty XHTML.

When to Use XHTML

1. If you require strict XML compliance for compatibility with XML tools.
2. When you want to ensure well-formed web documents.
3. When working in environments that demand stricter markup validation.

In summary, while HTML offers flexibility and ease of use, XHTML provides strictness and improved consistency, which can be beneficial in certain development scenarios.

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Maitri

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