角度:根据从下拉菜单(ng-show/ng-switch)中选择的选项显示div内容 [英] Angular: Show div content depending on which option chosen from drop down menu (ng-show/ng-switch)

问题描述

因此，我对前端(角度，bootsrap等)完全陌生，但是我在这里创建了一个JSFiddle链接，而我想做的基本上是如果有人选择了下拉菜单中，我想使用适当的ng(切换或显示)，并显示具有相同名称的div类，在这种情况下，该类为div class ="VA"

So I'm completely new to front end (angular, bootsrap, etc), but I have here a JSFiddle link that I created, and what I am trying to do is basically if someone chooses the option "VA" in the drop-down menu, I want to use the appropriate ng (switch or show), and show the div class with the same name, in this case the div class="VA"

如果他们选择NY，我希望它显示div-class ="NY"，而不是VA div(在我的示例中，我只有两个选项，但是在我的实际程序中会有很多不同的选项(可以大约是10)

If they choose NY, I want it to show the div-class="NY", and not the VA div (in my example I only have two options, but I will have around varying options in my actual program (could be ~10)

任何人都可以帮助我或向正确的方向发展吗?谢谢.

Can anyone help me or put me in the right direction? Thanks.

JSFiddle链接: http://jsfiddle.net/BootstrapOrBust/kw3qgL3f/

JSFiddle link: http://jsfiddle.net/BootstrapOrBust/kw3qgL3f/

<section ng-controller="Ctrl as loc">   
    <select class="form-control">

        <option>Choose Place</option>
        <option value="DC">DC</option>
        <option value="NY">NY</option>
    </select>
</section>

...
...
...

 <div class="DC">
     <table class="table">
         <thead>
             <tr>
                 <th>Location</th>
             </tr>
         </thead>
         <tbody>
             <tr>
                 <td><a href="#">Metro</a></td>
             </tr>
             <tr>
                 <td><a href="#">Capital</a></td>
             </tr>
         </tbody>
     </table>
</div>

 <div class="NY">
     <table class="table">
         <thead>
             <tr>
                 <th>Location</th>
             </tr>
         </thead>
         <tbody>
             <tr>
                 <td><a href="#">Subway</a></td>
             </tr>
             <tr>
                 <td><a href="#">Yankees</a></td>
             </tr>
         </tbody>
     </table>
</div>

推荐答案

http://jsfiddle.net/kw3qgL3f/3/

首先-您在某个地方有ng-app，这样角度就可以启动.

First off - you have have ng-app somewhere so angular can start up.

<section ng-app="test" ng-controller="Ctrl as loc"> 

第二，控制器控制的所有内容都必须位于ng-controller元素的内部，因此我们将</section>移至其他所有内容下方.

Second, everything that the controller controls has to be INSIDE the element with ng-controller, so we move your </section> below everything else.

使用select时，如果您使用ng-options而不是自己列出选项，将省去很多麻烦，唯一的例外是选择一个"选项-将其用作占位符:

When using select, you'll save yourself a lot of headache if you use ng-options instead of listing the options yourself, the one exception is the "choose one" option - put that in as the placeholder:

<select ng-model="showLoc" class="form-control" ng-options="place.abbreviation as place.name for place in places">                                                                    
    <option value="">Choose One</option>
</select>

$scope.places = [
     { abbreviation:'NY', name: 'New York'}, 
     {abbreviation: 'DC', name:'District of Columbia'}
];

此时您可以执行以下操作:

At which point you can do:

 <div ng-switch="showLoc">
     <div ng-switch-when="DC">
         ...
     </div>
     <div ng-switch-when="NY">
         ...
     </div>
 </div>

但是，我实际上可能会这样做: http://jsfiddle.net/kw3qgL3f/4/

However, I would actually probably do it like this: http://jsfiddle.net/kw3qgL3f/4/

<section ng-app="test" ng-controller="Ctrl as loc"> 
  <select ng-model="selectedPlace" class="form-control" ng-options="place as place.name for place in places">                                                                    
    <option value="">Choose One</option>
  </select>

  <table ng-if="selectedPlace" class="table">
     <thead>
         <tr>
             <th>Location</th>
         </tr>
     </thead>
     <tbody>
         <tr ng-repeat="property in selectedPlace.properties">
             <td><a href="#">{{property}}</a></td>
         </tr>
     </tbody>
   </table>
</section>

$scope.places = [
    { abbreviation:'NY', name: 'New York', properties: ['Subway', 'Yankees']},
    {abbreviation: 'DC', name:'District of Columbia', properties: ['Metro', 'Captial']}
];

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