📖 HTML Entity Encoding & XSS Prevention Guide
Learn HTML entity encoding syntax, named vs numeric entities, and sanitization techniques to prevent XSS attacks.
Preventing Cross-Site Scripting (XSS) with Entity Encoding
HTML entity encoding replaces reserved markup characters with equivalent safety entities. This ensures that user-supplied input is rendered visually as text rather than executed as HTML markup by the browser.
Key reserved characters include `<` (`<`), `>` (`>`), `&` (`&`), `"` (`"`), and `'` (`'`). Encoding input variables prevents attackers from injecting malicious `<script>` tags.
Frequently Asked Questions
Detailed specifications & guides FAQs.