Thursday, October 23, 2025

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New setHTML() method safely sanitizes and inserts HTML into web pages

Overview of the setHTML() method for safe HTML parsing and insertion

From Hacker News Original Article Hacker News Discussion

A new method called setHTML() offers a safer way to insert HTML into web pages by sanitizing input to prevent cross-site scripting (XSS) attacks. It aims to replace risky uses of innerHTML by automatically removing unsafe elements and attributes from inserted HTML strings.

Why it matters: setHTML() improves web security by preventing XSS vulnerabilities when dynamically injecting HTML content.

The big picture: This method is experimental and only supported in some browsers, indicating early adoption with wider support expected later.

The other side: Some developers find the API restrictive since it strips even explicitly allowed unsafe elements like