angular-promise

问题 This question already has answers here : JavaScript closure inside loops – simple practical example (44 answers) Closed 3 years ago . New to angularjs and trying out the promise pattern for the first time - I have a service utility inside which I have this method - this.getData= function(url){ var defer = $q.defer(); $http({method: 'GET', url: url}). success(function(data, status){ defer.resolve(data); }) .error(function(data, status) { defer.reject(status); }); return defer.promise; }; Now

问题 My angular2 application throws exception stating Object doesn't support this action only in Microsoft edge. Please check the below image: I debugged and found out that the exception is thrown at promise then code. To be more specific, I am getting the error at then on below code: this.dataLayerService .postLogin(this.model, this.postURL) .then(usermasterResponse => this.setToken(usermasterResponse)) .catch(error => { this.toastCommunicationService.setMessage(error, "", this

问题 Let's say you have: function myPromise() { // using some promise lib other than $q, like Q or bluebird var defer = Q.defer(); defer.resolve('John'); return defer.promise; } and then you have something like: function foo() { return myPromise().then(function (name) { return name + ' Smith'; }); } foo().then(function (name) { $scope.$apply(function () { // or can use $timeout console.log('after foo'); $scope.text = 'Hey ' + name; }); }); Is there a way to modify foo so that the after foo block

问题 In an Angular app, form is validated via custom JS function before submitting. Based on a condition, I need to show a confirmation dialog to the user, wait for confirmation or rejection, then proceed with validation. I'm having difficulties with achieving this asynchronously. I believe I am not using the promise correctly, but not sure what needs to be updated. Factory app.factory("confirmDialogService", ['$q', 'ngDialog', function ($q, ngDialog ) { return { popConfirm: function () { var

问题 I have a method seatClicked() that calls getUserID() to get the user id corresponding to the session atribute 'user'. There is a table that contains the username and user id(unique). The following is the definition of seatClicked() $scope.seatClicked = function() { promise = $scope.getUserID(); promise.then(function(results){ $scope.seatID.userID = results; // store the user id in $scope.seatID.userID }); } This is the definition for getUserID() $scope.getUserID = function() { var deferred =

问题 This question already has answers here : Chained promises not passing on rejection (3 answers) Closed 4 years ago . I didn't understand the behavior of the return value of then , Here its documentation - then(successCallback, errorCallback, notifyCallback) – regardless of when the promise was or will be resolved or rejected, then calls one of the success or error callbacks asynchronously as soon as the result is available. The callbacks are called with a single argument: the result or

问题 I have an array of image urls to download asynchronously. I need to wait the next iteration until the first async task completed. Here is my code snippet: downloadQueue.forEach(function (download, idex) { download.startAsync().then( function (res) { console.log('onSuccess'); }, function (err) { console.log('onError'); }, function (msg) { var progressPrecent = parseFloat(msg.bytesReceived / msg.totalBytesToReceive * 100).toFixed(2); console.log('Progress: ' + progressPrecent); }); }); After

问题 The code I have loops through 10 items in an array, makes a request for each item, then pushes the returned data to an array. Everything runs fine until the $q.all line. details.getDetails = function(idSet, pageNum) { var page = idSet[pageNum], mainDeferred = $q.defer(), promises = [], combinedItems = []; for(var i=0; i<page.length; i++){ var deferred = $q.defer(); ngGPlacesAPI.placeDetails({placeId: page[i][i]}) .then(function(data){ combinedItems.push(data); console.log(combinedItems); ///

问题 I have multiple controllers on a page that use the same service, for the sake of example we will call the service USER. The first time the USER.getUser() is called it does an $http request to GET data on the user. After the call is completed it stores the data in USER.data. If another call is made to USER.getUser() it checks if there is data in USER.data and if there is data it returns that instead of making the call. My problem is that the calls to USER.getUser() happen so quickly that USER

问题 (* As my previous question has been more or less answered, and the code has evolved, I open a new question. *) I want to build a simple playground with MEAN stack that mimics plunker: we have a list of files and a textarea on the left hand, and a live preview on the right hand. Note that the files are saved in a temporary folder, and the live preview is an iframe injected by the files from that temporary folder. ********** what I have written ********** In the html file, I add one controller