The Lineup Cheat Sheet was created so that you could get quick answers to your Fantasy start/sit questions with the analysis already built in. For detailed rationale, check out my latest content, ...
Encountering unset variables is common when scripting. Often your script needs to ask questions about values before using ...
Trusted types seem to be a modern way/approach to finally getting rid of such XSS vulnerabilities and preventing them. It#s not mentioned (yet) at all, in the cheat sheet. I'd point to that doc about ...