angularjs一页上的多个控制器

I have a page with multiple controllers, one of the controller is being used in 2 different divs within the same page. I am not sure if it is a scope issue or I just miss something in my code.

我有一个带有多个控制器的页面，其中一个控制器正在同一页面中的2个不同的div中使用。我不确定它是否是一个范围问题，或者我只是错过了我的代码中的一些内容。

here is the plunkr http://plnkr.co/edit/IowesXE3ag6xOYfB6KrN?p=preview

这里是plunkr http://plnkr.co/edit/IowesXE3ag6xOYfB6KrN?p=preview

I want to hide the textbox when the user clicks on 'Savings' link, display the box when clicking on 'Cost' link.

我想在用户点击“优惠”链接时隐藏文本框，在点击“费用”链接时显示该框。

5 个解决方案

#1

Every time you use ng-controller, you make a new instance of said controller, with it's own scope. If you set subCCtrl on the body tag (or a new parent), and remove it from the two divs it is currently on, it works for me.

每次使用ng-controller时，都会使用自己的范围创建所述控制器的新实例。如果你在body标签（或一个新的父级）上设置subCCtrl，并从当前打开的两个div中删除它，它对我有用。

Other solutions you might want to look in to are by keeping "hideThisBox" on the root scope, broadcasting an event when clicking on save or by keeping it in a service.

您可能想要查看的其他解决方案是将“hideThisBox”保留在根作用域上，在单击“保存”时保留事件或将其保留在服务中。

#2

Same controller, but declared twice. therefor - two scopes.
Normally the solution is to move the ng-controller declaration one dom level higher (in your case, to the body element. once only), and have it only once. Otherwise, look into angular services.

相同的控制器，但声明了两次。因此 - 两个范围。通常，解决方案是将ng-controller声明移动一个dom级别（在您的情况下，移动到body元素。只有一次），并且只有一次。否则，请研究角度服务。

see updated plunkr: http://plnkr.co/edit/pWnx2mdMeOeH33LUeTGm?p=preview

请参阅更新的plunkr：http：//plnkr.co/edit/pWnx2mdMeOeH33LUeTGm？p =preview

#3

You need to make some changes in controller and view.

您需要在控制器和视图中进行一些更改。

var app = angular.module('plunker', []);

 app.controller('subCCtrl', function($scope) {
   $scope.hideThisBox = false;
   $scope.update = function(label) {

     if (label == 'Cost')
       $scope.displaybox = true;
     else
       $scope.displaybox = false;
   }
 });
 app.controller('subACtrl', function($scope) {

 });

 app.controller('subBCtrl', function($scope) {

 });

HTML :

HTML：

<!DOCTYPE html>
<html ng-app="plunker">

  <head>
    <meta charset="utf-8" />
    <title>AngularJS Plunker</title>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <link rel="stylesheet" href="style.css" />
      <link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />
  <script src="http://code.jquery.com/jquery-1.9.1.js"></script>
  <script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
    <script data-require="angular.js@1.0.x" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.8/angular.min.js" data-semver="1.0.8"></script>
    <script src="app.js"></script>
  </head>

  <body>
            <div ng-controller="subCCtrl" class="row-fluid">

                <div class="span6">
                <a href="#" ng-click='update("Cost");displaybox=true;'>Cost</a>
                <br />
                <a href="#" ng-click='update("Savings");displaybox=fasle;'>Savings</a>
                <br />

                     </div>

            <hr />
            <div ng-controller="subACtrl">Do stuff that uses subACtrl</div>
            <div ng-controller="subBCtrl">Do stuff that uses subBCtrl</div>
            <hr />
            <div ng-controller="subCCtrl" class="row-fluid">
                <div class="span3">
                    <label>If click on 'Savings', hide below box: </label>
                </div>
                  <div ng-hide="hideThisBox" class="span6">
                    <input type="text" ng-model="test2" ng-show="displaybox"/>
                </div>          
            </div>
       </div>
  </body>

</html>

#4

I would recommend that you read up on Javascript scope. The issue with your code was the scope of ng-controllers.

我建议您阅读Javascript范围。您的代码的问题是ng-controllers的范围。

#5

You already got your answer i guess, but for those who will come next here is some tips ^^ (hope it will hep):

你猜我已经得到了你的答案，但是对于那些将来到这里的人是一些提示^^（希望它会是肝脏）：

ng-controller="myCtrl" will set a new instance of the "myCtrl" controller, with i'ts own scope

ng-controller =“myCtrl”将设置“myCtrl”控制器的新实例，具有自己的范围
The used scope will be the one of the firt div's controller it means that if you have something like:

使用范围将是firt div的控制器之一，这意味着如果你有类似的东西：

         <div id="maindiv" ng-controller="myCtrl>
                  <div id="subdiv1">
                      <div></div>
                      <div>
                          <div>some text</div>
                      </div>
                  </div>
                  <div id="subdiv2" ng-controller="myCtrl">
                      <div>
                          <span>-</span>
                          <span>so</span>
                          <span>this</span>
                          <span>is</span>
                          <span>a</span>
                          <span>subdiv</span>
                          <span>.</span>
                      </div>
                  </div>
              </div>
          </div>

Subdiv1 will have the same scope as maindiv
Subdiv1将与maindiv具有相同的范围
But Subdiv2 will have it's own instance of the myCtrl controller's scope.
但是Subdiv2将拥有它自己的myCtrl控制器范围的实例。
In a global way, Subdiv2's scope should have erited is data from the maindiv's scope.
从全局的角度来看，Subdiv2的范围应该是来自maindiv范围的数据。

Thats just a few easy tips and you will find more usefull ones on SO, or google, but anyway, if it can help some of you it will be cool.

这只是一些简单的提示，你会发现更多有用的SO或谷歌，但无论如何，如果它可以帮助你们中的一些人会很酷。

#1