angularjs-scope

问题 I see in controllers that $scope has $root, what is this? How is it different from $rootScope which can be injected in the controller? 回答1: $rootScope var which points to the parent of all the scopes and can be injected everywhere. All other scopes are children of the $rootScope . They are created via the $new method of the $rootScope thus every scope inherits from the $rootScope . In the angular source in the definition of the Scope constructor there is a line : function Scope() { this.$id =

问题 I am new to angularjs. How can I detect userAgent in angularjs. Is it possible to use that in controller? Tried something like below but no luck! var browserVersion = int((/msie (\d+)/.exec(lowercase(navigator.userAgent)) || [])[1]); I need to detect IE9 specifically! 回答1: Like Eliran Malka asked, why do you need to check for IE 9? Detecting browser make and version is generally a bad smell. This generally means that you there is a bigger problem with the code if you need JavaScript to detect

问题 I have defined a function on scope. And when I call it from the view inside {{}} it executes X number of times. Controller function testCtrl($scope) { $scope.myFunc = function(name) { return "Hello " + name; } } HTML <div>{{myFunc('Joe')}}</div> You can see it in this example: http://jsfiddle.net/rbRvD/2/ Or with Plunker: http://plnkr.co/edit/LLQ7cKs2fEoBwv0C5XPE I guess this is done the wrong way, but why is it executed so many times? 回答1: Your function is run 10 times. Why 10? Why not 100?

问题 I have defined a function on scope. And when I call it from the view inside {{}} it executes X number of times. Controller function testCtrl($scope) { $scope.myFunc = function(name) { return "Hello " + name; } } HTML <div>{{myFunc('Joe')}}</div> You can see it in this example: http://jsfiddle.net/rbRvD/2/ Or with Plunker: http://plnkr.co/edit/LLQ7cKs2fEoBwv0C5XPE I guess this is done the wrong way, but why is it executed so many times? 回答1: Your function is run 10 times. Why 10? Why not 100?

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . Demo not working in firefox <script> var app = angular.module('singlepageapp', ['ngRoute']) app.config(['$routeProvider', function ($routeProvider) { $routeProvider .when('/About', { templateUrl: 'DistrictMaps/About.aspx', }) .when('/Ch', { templateUrl: 'DistrictMaps/Ch.aspx', }) }]); app.run(function (

问题 I have tasks listed and each task has both a "Do" button and a "Fund" button. Once I click on the "Do" button or "fund" button, I want the specific task to be assigned to a state of "DoRequested" or "FundingProposed". I just do not know how to add these states to the specific model in my case. As I am new to angular, I have no idea on how to do this. Here is my view code so far: <div ng-app="facebookExample" view-title="Tasks"> <div ng-controller="todoController"> <h1>Tasks</h1> <div class=

问题 angular.module('myFirstApp')// //begin controller .controller('myController',function($scope,$http,personFactory){ //hi im controller i need to call the http service from the factory //begin service //hi im service i dont want to live in controller.js , i want to live in app.js //can we put the service inside a factory which is in app.js file and get called using controller #1 $http.get('iphone.json').success(function(result){ $scope.ObjectArray = result; }).error(function(error){ alert(error

问题 I wnt to use ng-repeat to display a list filtered by an object value. Here is a plukr of my attempt https://plnkr.co/edit/vD4UfzM4Qg7c0WGTeY18?p=preview The following returns all of my JSON names as expected. <li ng-repeat="item in collection_data">{{navitem.name}}</li> now i want to filter and only show the names of the items that have "foreign_lang": "es", like in this json snippet { "id": "ddb06ba2-6348-4d45-9e63-a6fa3632e5c2", "created_at": "2015-10-12T18:34:15.668Z", "updated_at": "2016

问题 I wnt to use ng-repeat to display a list filtered by an object value. Here is a plukr of my attempt https://plnkr.co/edit/vD4UfzM4Qg7c0WGTeY18?p=preview The following returns all of my JSON names as expected. <li ng-repeat="item in collection_data">{{navitem.name}}</li> now i want to filter and only show the names of the items that have "foreign_lang": "es", like in this json snippet { "id": "ddb06ba2-6348-4d45-9e63-a6fa3632e5c2", "created_at": "2015-10-12T18:34:15.668Z", "updated_at": "2016

问题 I want to have a button on the front end (AngularJS) that refreshes the changes made to the database. I have tried the following in the html: <button ng-click="reloadState" data-translate> Refresh Database </button> In the app.js file, I have this function in my controller: $scope.reloadState = function() { $state.go($state.current, {}, {reload: true}); } I have also tried: $scope.reloadState = function() { $state.reload(); }; and: $scope.reloadState = function() { window.location.reload(); }