refresh page and run function after javascript

1window.onload = function() {
2    var reloading = sessionStorage.getItem("reloading");
3    if (reloading) {
4        sessionStorage.removeItem("reloading");
5        myFunction();
6    }
7}
8
9function reloadP() {
10    sessionStorage.setItem("reloading", "true");
11    document.location.reload();
12}