Popstate event in repeater

Hello everyone,

i am struggling with the popstate event in a repeater. What I am trying is to listen on the popstate event in case a user uses the implemented Back Button or the browser Back Button. But it seems that the popstate event is not being triggered.

I tried to use the popstate like this:

window.popstate = function(e) {
    alert('hello onpopstate');
}

and

window.onpopstate = function(e) {
    alert('hello onpopstate');
}    

Both seem not to be affected by "history.back()" or browser-back. What I try to achieve is to set an Item into the localstorage as soon as the button(implemented / browser) is being clicked.