At some point Bookmarklets died and no one played their dirge.
XSS (Cross-site scripting) is a topic for another day, but you should beware of it you're not. Go look it up, I’ll wait. No really, this article will still be here when you get back.
In the past few weeks, I’ve been creating some interesting bookmarklets to help with my web development. Some of these I’ve found, others I’ve created (mine). To use them, simply drag each headings link to your bookmark bar.
Want to know the last time an asset was updated? Do note that this bookmarklet only works with static content. It won’t work on server side rendered content like Asp.Net or PHP. If the alert shows you today, right now, it’s most likely dynamically generated.