ng-repeat 不动态添加新项目 [英] ng-repeat not adding new items dynamically
问题描述
我是 Angular JS (1) 的新手，我在使用 ng-repeat 时遇到了问题.我在 Angular 中使用 socket.io.这是我的控制器:
var messagesApp = angular.module('messagingApp', []);函数 mainController($scope) {var socket = io.connect();socket.on('message', function(data){$scope.users.push({'Name': 'yeh'});控制台日志($scope.users)；});$scope.users = [];//如果我把东西放在这里并注释掉套接字的东西，它会显示在前端};messagesApp.controller('mainController',mainController);我可以看到它在块内(通过 console.log).但是，它没有向前端显示任何内容.我的前端如下:
<div ng-repeat="user in users"><p>{{ user.Name }}</p>我的理解是，如果您更改模型(在本例中为用户)，它应该会自动更新 ng-repeat.任何帮助将不胜感激.
在推送到数组后添加 $scope.$apply().因为您正在角度范围之外更新模型.所以 angularjs 不知道模型已经更新.更多关于 $scope.$apply http://tutorials.jenkov.com/angularjs/watch-digest-apply.html
I am new to Angular JS (1) and I am having issues with ng-repeat. I am using socket.io with Angular. Here is my controller:
var messagingApp = angular.module('messagingApp', []);
function mainController($scope) {
var socket = io.connect();
socket.on('message', function(data){
$scope.users.push({'Name': 'yeh'});
console.log($scope.users);
});
$scope.users = []; //if I put stuff here and comment out socket stuff, it shows in the front-end
};
messagingApp.controller('mainController',mainController);
I can see that it is going inside that on block (via console.log). However, it is not displaying anything to the front-end. My front-end is as follows:
<body ng-controller="mainController">
<div ng-repeat="user in users">
<p>{{ user.Name }}</p>
</div>
My understanding is that if you change the model (users in this case), it should automatically update the ng-repeat. Any help would be appreciated.
Add $scope.$apply() after pushing to the array. Because you are updating the model outside of the angular scope. So the angularjs doesnot know the model has been updated. More about $scope.$apply http://tutorials.jenkov.com/angularjs/watch-digest-apply.html
这篇关于ng-repeat 不动态添加新项目的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
