<div ng-app>
<h2>$q test</h2>
<div ng-controller="TodoCtrl">
<div ng-bind="'Promise1: ' + Promise1"></div>
<div ng-bind="'Promise2: ' + Promise2"></div>
<div ng-bind="'Promise3: ' + Promise3"></div>
<div ng-bind="'Promise4: ' + Promise4"></div>
<div ng-bind="'Promise5: ' + Promise5"></div><br />
<div ng-bind="'Status1: ' + Status1"></div>
<div ng-bind="'Status2: ' + Status2"></div>
</div>
</div>
JS:
function TodoCtrl($scope, $q, $timeout) {
function createPromise(name, timeout, willSucceed) {
$scope[name] = 'Running';
var deferred = $q.defer();
$timeout(function() {
if (willSucceed) {
$scope[name] = 'Completed';
deferred.resolve(name);
} else {
$scope[name] = 'Failed';
deferred.reject(name);
}
}, timeout * 1000);
return deferred.promise;
}
// Create 5 promises
var promises = [];
var names = [];
for (var i = 1; i <= 5; i++) {
var willSucceed = true;
if (i == 2) willSucceed = false;
promises.push(createPromise('Promise' + i, i, willSucceed));
}
// Wait for all promises
$scope.Status1 = 'Waiting';
$scope.Status2 = 'Waiting';
$q.all(promises).then(
function() {
$scope.Status1 = 'Done';
},
function() {
$scope.Status1 = 'Failed';
}
).finally(function() {
$scope.Status2 = 'Done waiting';
});
}
result:
Promise1: Completed
Promise2: Failed
Promise3: Completed
Promise4: Completed
Promise5: Completed
Status1: Failed
Status2: Done waiting
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