如果应用程序处于离线状态，我如何使用 AngularJS 进行检测？

Question

We have many customers in remote areas and lost of connectivity is frequent. How can I detect if the javascript app is offline? Meaning cannot reach the server and load the templates.

Answer 1

I finally found a JSFiddle that does exactly that: Check if the web application is online. It uses window.navigator.onLine .

JSFiddle: http://jsfiddle.net/rommsen/QY8w2/

Source: https://groups.google.com/d/msg/angular/ZncvSVUc9y4/S4jH1e_XgGoJ

Answer 2

$scope.online = $window.navigator.onLine;

$window.addEventListener("offline", function() {
    $scope.online = false;
});

$window.addEventListener("online", function() {
    $scope.online = true;
});