AngularJS window.onbeforeunload is not working on Android and Iphone

问题

I am using the following code:-

 .directive('confirmOnExitForm', function() {
        return {
            link: function($scope, elem, attrs) {
                window.onbeforeunload = function(){
                    if ($scope.form.$dirty) {
                        return "The form is dirty, do you want to stay on the page?";
                    }
                }

            }
        };
    })

This code is working fine on Desktops Chrome and Safari, but it is not working for Android and Iphones.

Any idea why?

来源：https://stackoverflow.com/questions/47150350/angularjs-window-onbeforeunload-is-not-working-on-android-and-iphone

标签

javascript