Clear local storage on session clear

I want to clear localStorage on session clear, i.e when the user exits the browser.

I am using window.onbeforeunload for this purpose, as shown below.

window.onbeforeunload = function() {
    localStorage.removeItem('myToken');
    return '';
};

The problem is that this function also removes item also on browser reload.

Is there any way around this, or is it any better way on implementing this?

Edit: This is a react app, is there any hook that prevents from clearing local storage on browser reload?

Answer

Use sessionStorage. It has the same methods as localStorage, but it clears when the session is cleared.