Reload page dynamically

I create a sahsboard to which I added a modal box which proposes to save or to go back. To go back, I need to reload the page (so that the data will return to the initial state). I used javascrpt and this script works but the problem is that the browser shows that the page is reloaded (I would like to reload the page dynamically). Do you have an idea to reload the page dynamically?

current code

function cancel() {
close();
document.location.reload();

}