How to change the address bar on actions on the page?

Question

JavaScript

So it goes.
There was an unexpected task - through a link so that you can open a modal window.
Accordingly, when the window is opened, this link should be generated in the address bar.
How to implement it correctly?

Answer 1

add a hash to the link, for example #open-modal, and check
window.location.hash === '#open-modal' on load

Answer 2

History API

Answer 3

History.js