The following content is in the Xxss category:

Prompt.ml - XSS Challenges writeup

escape.alf.nu - XSS Challenges writeup

XSS - Multilevel XML Parsing: JS for Pentesters task 21 write up

XSS - Multilevel JSON Parsing: JS for Pentesters task 20 write up

XSS - Multilevel HTML parsing: JS for Pentesters task 19 write up

XSS - HTML parsing with XMLHttpRequest(): JS for Pentesters task 18

CSRF token stealing with XSS: JS for Pentesters task 17 write up

XSS - Ex-filtrating data with XMLHttpRequest(): JS for Pentesters task 15 write up

XSS - fetching data with XMLHttpRequest: JS for Pentesters task 14

XSS - posting with XMLHttpRequest(): JS for Pentesters task 13

XSS - Stealing from Auto complete: JS for Pentesters task 12 write up

XSS - Replacing images: JS for Pentesters task 11 write up

XSS - Include external js using js: JS for Pentesters task 10 write up

XSS - including external js file: JS for Pentesters task 9 write up

XSS - KeyLogger with JavaScript: JS for Pentesters task 7 write up

XSS - Capture all Mouse Clicks and Redirect: JS for Pentesters task 6 write up

XSS - Social Engineering: JS for Pentesters task 5 write up

XSS - Modifying Form fields: JS for Pentesters task 4 write up

XSS - Hijacking a form submit: JS for Pentesters task 3 write up

Changing all links: JavaScript for Pentesters task 2 write up

Modifying HTML with JavaScript - JavaScript for Pentesters task 1 write up