javascript - 多项选择不突出元素

Question

我已将全选按钮添加到多项选择中。问题是如果我点击全选按钮，所有元素都被选中但没有突出显示。

这是我的代码:

<div class="label_hd">Profiles* {{user.profile}}
    <input type="button" id="select_all" ng-click="selectedAll()"
           name="select_all" value="Select All" style="margin-left: 10px">
</div>
<select multiple class="browser-default" name="userprofile"
        id="userprofile" ng-model="user.profile">
    <option ng-repeat="profile in userprofiles" value="{{profile.profile}}">
        {{ profile.profile_name }}
    </option>
</select>

Controller.js代码:

$scope.selectedAll = function(){
    $scope.user.profile = []; 
    angular.forEach($scope.userprofiles, function(item){
       $scope.user.profile.push( item.profile);
    }); 
}

Answer 1

需要设置$scope.user.profile[item] = true;

$scope.selectedAll = function(){
$scope.user.profile = []; 
angular.forEach($scope.userprofiles, function(item){
    $scope.user.profile.push( item.profile.toString());
    $scope.user.profile[item] = true;
}); 
}