AngularJS中的ui路由显示空页面

ui-route in AngularJS showing empty page

本文关键字：显示 路由 中的 ui AngularJS      更新时间：2023-09-26

我正在按照本教程学习AngularJS：https://thinkster.io/mean-stack-tutorial.

就在它说"创建新评论"之前，我开始讨论这个部分。我遇到的问题是，当我点击"评论"时，会出现一个只有水平线的空白页面。

根据我的理解，这篇文章的标题应该放在两条虚假评论的顶部。这是我的代码：

index.html:

<!DOCTYPE html>
<html>
    <head>
        <title>Flapper News</title>
        <!-- BOOTSTRAP -->
        <link href="http://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet">
        <!-- ANGULARJS -->
        <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.10/angular.min.js"></script>
        <script src="http://cdnjs.cloudflare.com/ajax/libs/angular-ui-router/0.2.10/angular-ui-router.js"></script>
        <script src="app.js"></script>
        <style> .glyphicon-thumbs-up { cursor:pointer } </style>
    </head>
    <body ng-app="flapperNews" style="padding: 50px">
        <div class="row">
            <div class="col-md-6 col-md-offset-3">
                <ui-view></ui-view>
            </div>
        </div>
        <!-- Inline home template -->
        <script type="text/ng-template" id="/home.html">
            <div class="page-header">
                <h1>Flapper News</h1>
            </div>
            <!-- Show all the posts -->
            <div ng-repeat="post in posts | orderBy: '-upvotes'" style="margin-bottom: 10px;">
                <div class="row">
                    <div class="col-md-2" style="width: 80px;">
                        <span class="glyphicon glyphicon-thumbs-up" ng-click="incrementUpvotes(post)"></span>
                        &nbsp;&nbsp;{{post.upvotes}}
                    </div>
                    <div class="col-md-9">
                        <span style="font-size:20px;">
                            <a ng-show="post.link" href="{{post.link}}">{{post.title}}</a>
                            <span ng-hide="post.link">{{post.title}}</span>
                        </span>
                        <br />
                        <span style="font-size: 12px;"> 
                            <a href="#/posts/{{$index}}">Comments</a> l 
                            <a href="#/posts/{{$index}}">Share</a>
                        </span>
                    </div>
                </div>
            </div>
            <!-- Form to make new posts -->
            <form ng-submit="addPost()" style="margin-top:30px;">
                <h3>Add New Post</h3>
                <div class="form-group">
                    <input type="text" class="form-control" placeholder="Title" ng-model="title" />
                </div>
                <div class="form-group">
                    <input type="text" class="form-control" placeholder="Link" ng-model="link" />
                </div>
                <button type="submit" class="btn btn-primary" ng-click="submit">Post</button>
            </form>
        </script>
        <!-- Inline Posts section -->
        <script type="text/ng-template" id="/posts.html">
            <!-- Display title as header -->
            <div class="page-header">
                <h3>
                    <a ng-show="post.link" href="{{post.link}}">{{post.title}}</a>
                    <span ng-hide="post.link">{{post.title}}</span>
                </h3>
            </div>
            <!-- Display the comment -->
            <div ng-repeat="comment in post.comments | orderBy:'-upvotes'">
                <span class="glyphicon glyphicon-thumbs-up" ng-click="incrementUpvotes(comment)"></span>
                {{comment.upvotes}} - by {{comment.author}}
                <span style="font-size:20px; margin-left:10px;">{{comment.body}}</span>
            </div>
        </script>
    </body>
</html>

app.js

var app = angular.module('flapperNews', ['ui.router']);
app.factory('posts', [function() {
    var o = {
        posts: []
    };
    return o;
}]);
app.config([
    '$stateProvider',
    '$urlRouterProvider',
    function($stateProvider, $urlRouterProvider) {
        $stateProvider
        .state('home', {
            url: '/home',
            templateUrl: '/home.html',
            controller: 'MainCtrl'
        });
        $stateProvider
        .state('posts', {
            url: '/posts/{id}',
            templateUrl: '/posts.html',
            controller: 'PostsCtrl'
        });
        $urlRouterProvider.otherwise('home');
}]);
app.controller('MainCtrl', ['$scope', 'posts', function($scope, posts) {
    $scope.posts = posts.posts;
    $scope.addPost = function() {
        if(!$scope.title || $scope.title === '') {
            return;
        }
        $scope.posts.push({
            title: $scope.title, 
            link: $scope.link,
            upvotes: 0,
            comments: [
                {author: 'Joe', body: 'Cool Post!', upvotes: 0},
                {author: 'Bob', body: 'Great idea but no!', upvotes: 0}
            ]});
        $scope.title = '';
        $scope.link = '';
    };
    $scope.incrementUpvotes = function(post) {
        post.upvotes += 1;
    }
}]);
app.controller('PostsCtrl', [
    '$scope', 
    '$stateParams', 
    'posts', 
    function($scope, $stateParams, posts) {
        $scope.posts = posts.posts['$stateParams.id'];
}]);

我不知道我做错了什么，因为它什么都没显示。任何帮助都将不胜感激，谢谢！

控制台错误：

The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol.

Use of getPreventDefault() is deprecated. Use defaultPrevented instead.

由于多个问题，您的代码将无法工作：1.您没有将addPosts()中的任何id属性添加到posts，而是在访问posts.posts['$stateParams.id']时期望它。

  1. 在注释模板中，您正在使用post，而您已经在控制器中声明了$scope.posts

我已经创建了一个jsbin来添加id属性并修复其他问题，现在它可以工作了。

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