How to get the current block when scrolling the page?

Question

Angular

I made a menu, when you click on an element of which the page scrolls to the desired block. But how to make it possible to determine which block the user is currently seeing when scrolling the page on its own and highlight it in the menu?

Answer 1

Listen to the onscroll event, compare the scrollTop value with the values ​​from the offset() blocks.