如何找到最后一个li是否在角js中是活动的

Question

我正在重复使用ng-repeat在这里，我需要找到最后一个li活动，如果最后一个li活动，我需要禁用prev按钮。

<div class="pagination"> 
    <button ng-disabled="start == 0" ng-click="prevPage()">Prev</button> 
    <ul> 
     <li ng-repeat="i in getNumber(myNumber) | limitTo: pagerStep track by $index" ng-class="{active: $index == selected}" ng-click="select($index)"> 
     <button ng-click="loadFromMenu($index+1)" ng-class="pageList"> 
      {{$index+1}} 
     </button> 
     </li> 
    </ul> 
    <button ng-disabled="start == lastStart" ng-click="nextPage()">Next</button> 
    </div> 

Answer 1

另一个参数添加到select()功能：isLast，并从视图ng-click="select($index, $last)"调用它，那么你可以再多问标志，指示，如果最后点击的元素是最后的ngRepeat，并使用该标志禁用PREV键：

检视：

<div class="pagination"> 
    <button ng-disabled="start == 0" ng-click="prevPage()">Prev</button> 
    <ul> 
     <li ng-repeat="i in getNumber(myNumber) | limitTo: pagerStep track by $index" ng-class="{active: $index == selected}" ng-click="select($index, $last)"> 
     <button ng-click="loadFromMenu($index+1)" ng-class="pageList"> 
      {{$index+1}} 
     </button> 
     </li> 
    </ul> 
    <button ng-disabled="isLast" ng-click="nextPage()">Next</button> 
    </div> 

控制器：

$scope.select = function(selectedIndex, isLast) { 
    $scope.selected = selectedIndex; 
    $scope.isLast = isLast; 
    // And the rest of your code of course 
}