很惊讶地看到为什么
angularjs promise没有使用$interval服务多次解决.以下是我的代码.变量i多次递增,但承诺仅解析一次.
var app = angular.module('plunker',[]);
app.controller('MainCtrl',function($scope,myService) {
myService.then(function(result) {
$scope.i = result;
});
});
app.factory('myService',function($interval,$q) {
var deferred = $q.defer();
var i = 0;
$interval(function() {
i += 1;
deferred.resolve(i);
},2000);
return deferred.promise;
});
使用AngularJS,您可以使用$q(
https://docs.angularjs.org/api/ng/service/ $q)的通知功能而不是解析：
var app = angular.module('plunker',myService) {
// Notice that the third callback is for notify
myService.then(null,null,function(result) {
$scope.i = result;
});
});
app.factory('myService',$q) {
var deferred = $q.defer();
var i = 0;
$interval(function() {
i += 1;
deferred.notify(i);
},2000);
return deferred.promise;
});
您可能希望添加$interval.cancel()以在某个点/条件(https://docs.angularjs.org/api/ng/service/ $interval)停止循环.
