AngularJS改變職能與功能

Question

我有一個Agular應用程序，我有一個美國國家列表佈局作爲一個「塊」時尚UL。

http://jsfiddle.net/Mrbaseball34/3u375/

現在，當狀態變量具有一個條目，在特定狀態下的類應該是主動的（在栗色示出）。我正在使用函數設置類，因爲您不能使用in子句。代碼DOES進入函數，當狀態=='TX'時，它會返回true，但是該類沒有被應用。

模板：

<div ng-controller="MyCtrl" id="state_scroller"> 
    <section class="states"> 
     <ul> 
      <li ng-repeat="state in statesList" 
       ng-class="{true: 'active', false: ''}[selectedState($index)]" 
       id="st_{{state.id}}">{{state.id}}</li> 
     </ul> 
    </section> 
</div> 

我在做什麼錯在這裏？ 這裏的渲染代碼的樣子在Chrome調試器：

<div ng-controller="MyCtrl" id="state_scroller" class="ng-scope"> 
    <section class="states"> 
     <ul> 
      <!-- ngRepeat: state in statesList --> 
      <li ng-repeat="state in statesList" 
       ng-class="{true: 'active', false: ''}[selectedState($index)]" 
       id="st_AK" class="ng-scope ng-binding">AK</li> 
      <!-- end ngRepeat: state in statesList --> 
    <!-- snipped some --> 
      <li ng-repeat="state in statesList" 
       ng-class="{true: 'active', false: ''}[selectedState($index)]" 
       id="st_TN" class="ng-scope ng-binding">TN</li> 
      <!-- end ngRepeat: state in statesList --> 
      <li ng-repeat="state in statesList" 
       ng-class="{true: 'active', false: ''}[selectedState($index)]" 
       id="st_TX" class="ng-scope ng-binding">TX</li> 
      <!-- end ngRepeat: state in statesList --> 
      <li ng-repeat="state in statesList" 
       ng-class="{true: 'active', false: ''}[selectedState($index)]" 
       id="st_UT" class="ng-scope ng-binding">UT</li> 
      <!-- end ngRepeat: state in statesList --> 
    <!-- snipped rest --> 
      <!-- end ngRepeat: state in statesList --> 
     </ul> 
    </section> 
</div> 

Answer 1

$scope.selectedState = function(id) { 
    var x = false; 
    angular.forEach($scope.states, function (state, key2) { 
     if (state.id == $scope.statesList[id].id) { 
      x = true; 
     } 
    }) 
    return x; 
}; 

你要檢查一切，然後返回，如果你發現了它。現在，如果第一個不匹配，則退出該foreach。然後你不從selectedState函數返回（在foreach有它自己的功能，它返回到selectedState功能，然後不返回任何東西。

http://jsfiddle.net/3u375/17/