如何根據角度中的復選框選擇過濾結果

Question

我有3個復選框，我想根據選擇的checbox來過濾我的結果列表。 我正在形成一個選擇數組並使用angular應用過濾器，但是當我單擊復選框時，結果或列表將消失

HTML

<div class="row" ng-controller="DataCtrl">
    <div class="col-sm-4">
        <div class="checkbox">
            <label>
                <input type="checkbox" value="US" ng-click="select('US')">
                US
            </label>
        </div>
        <div class="checkbox">
            <label>
                <input type="checkbox" value="UK" ng-click="select('UK')">
                UK
            </label>
        </div>
        <div class="checkbox">
            <label>
                <input type="checkbox" value="Australia" ng-click="select('Australia')">
                Australia
            </label>
        </div>
    </div>
    <div class="col-sm-8">
        <div class="well" ng-repeat="eve in events | filter : selected_country">
            <h3>{{eve.title}}</h3>
            <h5>{{eve.country}}</h5>
        </div>
    </div>
</div>

調節器

refine.controller('DataCtrl', function($scope){
$scope.selected_country = [];
$scope.events = [
    {
        'title' : 'Global Warming 2016',
        'country' : 'US'
    },
    {
        'title' : 'Global Warming 2017',
        'country' : 'UK'
    },
    {
        'title' : 'Global Warming 2018',
        'country' : 'Australia'
    }
];

$scope.select = function(country){
    var index = $scope.selected_country.indexOf(country);
    var country_exists = (index > -1);
    if(country_exists == false){$scope.selected_country.push(country);}
    else{ $scope.selected_country.splice(index, 1);}
    console.log($scope.selected_country);
}

}）;

Answer 1

看來你寫錯了你的條件，試着改變

if(country_exists == false){$scope.selected_country.push(country);}

至

if(country_exists == true){$scope.selected_country.push(country);}