在Angular JS的控制器中添加一个声明的对象

add an object declared on the controller in Angular JS

本文关键字：一个 声明 对象 添加 JS Angular 控制器      更新时间：2023-09-26

我是一个angularJS初学者，我有一个问题。我想添加数据到一个媒体对象在html中使用在控制器内的脚本中声明的对象，但我找不到哪个指令我必须使用。

代码如下:

<!DOCTYPE html>
<html lang="en" ng-app="confusionApp">
<head>
     <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- The above 3 meta tags *must* come first in the head; any other head
         content must come *after* these tags -->
    <title>Ristorante Con Fusion: Menu</title>
        <!-- Bootstrap -->
    <link href="../bower_components/bootstrap/dist/css/bootstrap.min.css" rel="stylesheet">
    <link href="../bower_components/bootstrap/dist/css/bootstrap-theme.min.css" rel="stylesheet">
    <link href="../bower_components/font-awesome/css/font-awesome.min.css" rel="stylesheet">
    <link href="styles/bootstrap-social.css" rel="stylesheet">
    <link href="styles/mystyles.css" rel="stylesheet">
    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
      <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
      <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->
</head>
<body>
    <div class="container">
        <div class="row row-content" ng-controller="dishDetailController as dishCtrl">
            <div class="col-xs-12">
                <div class="media">
                  <div class="media-left media-middle">
                    <a href="#">
                      <img class="media-object img-thumbnail" ng-src={{dish.image}} alt="Uthapizza">
                    </a>
                  </div>
                  <div class="media-body">
                    <h4 class="media-heading">{{dish.name}}<span class="label label-danger">{{dish.label}}</span><span class="badge">{{dish.price | currency}}</span></h4>
                    <p>{{dish.description}}</p>
                  </div>
                </div>
            </div>
            <div class="col-xs-9 col-xs-offset-1">
                <p>Put the comments here</p>
            </div>
        </div>
    </div>
    <script src="../bower_components/angular/angular.min.js"></script>
    <script>
        var app = angular.module('confusionApp',[]);
        app.controller('dishDetailController', function() {
            var dish = {
                          name:'Uthapizza',
                          image: 'images/uthapizza.png',
                          category: 'mains',
                          label:'Hot',
                          price:'4.99',
                          description:'A unique combination of Indian Uthappam (pancake) and Italian pizza, topped with Cerignola olives, ripe vine cherry tomatoes, Vidalia onion, Guntur chillies and Buffalo Paneer.',
                           comments: [
                               {
                                   rating:5,
                                   comment:"Imagine all the eatables, living in conFusion!",
                                   author:"John Lemon",
                                   date:"2012-10-16T17:57:28.556094Z"
                               },
                               {
                                   rating:4,
                                   comment:"Sends anyone to heaven, I wish I could get my mother-in-law to eat it!",
                                   author:"Paul McVites",
                                   date:"2014-09-05T17:57:28.556094Z"
                               },
                               {
                                   rating:3,
                                   comment:"Eat it, just eat it!",
                                   author:"Michael Jaikishan",
                                   date:"2015-02-13T17:57:28.556094Z"
                               },
                               {
                                   rating:4,
                                   comment:"Ultimate, Reaching for the stars!",
                                   author:"Ringo Starry",
                                   date:"2013-12-02T17:57:28.556094Z"
                               },
                               {
                                   rating:2,
                                   comment:"It's your birthday, we're gonna party!",
                                   author:"25 Cent",
                                   date:"2011-12-02T17:57:28.556094Z"
                               }
                           ]
                    };
            this.dish = dish;
        });
    </script>
</body>
</html>

有人能帮帮我吗?我认为这很简单，但我知道我已经崩溃了!

谢谢

你至少有2个选择

选项1:使用$scope。这将确保你的html保持不变

app.controller('dishDetailController', function($scope) {
   // Your dish declaration
   $scope.dish = dish;
 });

选项2:Javascript保持不变。在HTML中，因为你使用dishDetailController as dishCtrl

，所以用dishCtrl作为dish的前缀

示例:用

代替<img class="media-object img-thumbnail" ng-src={{dish.image}} alt="Uthapizza">
<img class="media-object img-thumbnail" ng-src={{dishCtrl.dish.image}} alt="Uthapizza">

这不是完全清楚你之后，但我假设你只是想知道如何改变/更新控制器内的数据，并有它反映在视图内?

任何你添加到你的dish对象，将在你的html中的dish属性下访问angularjs表达式。

的例子:

app.controller('dishDetailController', function() {
    this.dish = {
        colour : 'blue'
    };
});

然后在view/html中:

<div ng-controller="dishDetailController">
    {{dish.colour}}
</div>

如果你试图使用注释，因为这是我能看到的唯一你还没有实现的东西。

在你的html中，你可以这样做: 
<ul class="comments">
    <li class="comment" ng-repeat="comment in dish.comments">
        {{comment.comment}} - Author ({{comment.author}}) Rating : {{comment.rating}}
    </li>
</ul>
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