Does URL encoding prevent XSS

Xss attacks are common to web applications as popular as facebook, google, and paypal, and xss has been a mainstay on the open web application security project (owasp) top 10 list since inception.You can't apply url encoding to a complete url, because it is already url encoded and encoding it again will result in double encoding, corrupting.A simple example xss would be:For example, this can occur if you were to read a value from a form, and then use javascript to write it back out to the dom.This is a separate rule for the whole url once the url is encoded, then when inserting into a html attribute, then you apply html encoding.There are a lot more ways to help prevent the dom xss and you can read more about it at owasp dom xss prevention.

This library works by creating the html tag tree of the webpage.Then it parses the page and matches all tags.Preventing cross site scripting vulnerabilities.A very big portion of web applications are using html entity encoding to handle untrusted data, and this method is robust enough to protect them from xss attack for most of the time.