Check if page gets reloaded or refreshed in JavaScript

Question

I want to check when someone tries to refresh a page.

For example, when I open a page nothing happens but when I refresh the page it should display an alert.

Answer 1

First step is to check sessionStorage for some pre-defined value and if it exists alert user:

if (sessionStorage.getItem("is_reloaded")) alert('Reloaded!');

Second step is to set sessionStorage to some value (for example true):

sessionStorage.setItem("is_reloaded", true);

Session values kept until page is closed so it will work only if page reloaded in a new tab with the site. You can also keep reload count the same way.