I've been trying all afternoon to get ImageMapster to work... I kept getting the weirdest errors, and all the Google searching in the world didn't help... (Stuff like "Uncaught TypeError: i.size is not a function". What the heck does that even mean?!)
Turns out, I was using jQuery 3.4.1 and ImageMapster isn't compatible with that. I switched to jQuery 2.2.4, and it finally seems to be working. Like, literally the exact same code, only with the <script> tag source switched from 3.4.1 to 2.2.4, and all my problems go away. Ridiculous.
Problem is, this has to go into a Cordova app where we're using jQuery 3.x
So... How do I get something with the functionality of ImageMapster, but will work with jQuery 3.x? Basically, I need to programmatically highlight areas of a <map> in JavaScript. So any ideas on how to do that other than with ImageMapster?
You should check out this fork of ImageMapster.
Version 1.3.0 works with jQuery version 3.5.1.