This node.js module provides functions for removing unsafe parts and ads from HTML. I am using it for the <description> element of RSS feeds.
npm install resanitize
var resanitize =html = '<div style="border: 400px solid pink;">Headline</div>';; // => '<div>Headline</div>'
This module's opinion of "sanitized" might not meet your security requirements. The mere fact that it uses regular expressions should make this disclaimer unnecessary, but just to be clear: if you intend to display arbitrary user input that includes HTML, you're going to want something more robust.
Note that the
stripUnsafeTags method will loop over the strip an arbitrary
number of times (2) to try to strip maliciously nested html tags. After the
maximum number of iterations is reached, if the string still appears to contain
any unsafe tags, it is deemed unsafe and set to an empty string. If this seems
unexpected and/or is causing any problems, please raise an issue.