geeteshwer/semester-3 ? reverse-engineered prompt

Build me a simple semester 3 practice project that shows a bunch of basic web development examples in one place.

I want a few small pages and scripts for things like functions, a calculator, simple DOM practice, event handling, a student management screen, file handling examples, and a very basic local server page. Keep it clean and easy to open in a browser, with each part clearly separated so I can study and demo it later.

Please make it feel like a student project, not a polished product, but still organized and easy to understand. If you need to check anything current while building it, look up the latest docs online.