Hello, I'M looking for something in JavaScript But I don't know what

Question

Hello, I'M looking for something in JavaScript But I don't know what

It's called

For example the mobile version of Instagram

There are some icons like account, search, home etc.
And when you click on them the current page will be removed or hidden and the new page will be replaced

I want to learn about these things but I know nothing about it
I want to do this with JavaScript
I know JavaScript but I just know the basics
Can anybody help me out?