我遇到了问题,我要做的是:
我有这个按钮,如果用户取消订阅,他可以点击按钮进行订阅。现在问题是,如果订阅用户,我希望他点击按钮取消订阅。
<button class="btn btn-primary subscribe-btn" ng-click="subscribe()" >
Subscribe
</button>
我怎样才能在angularJS中做到这一点?根据用户的状态(例如:isSubscribed = true)更改按钮的功能,外观和调用功能。
答案 0 :(得分:9)
试试这个:
<button class="btn btn-primary subscribe-btn" ng-click="isSubscribed ? unsubscribe() : subscribe()" >
<span ng-show="isSubscribed">Subscribe</span><span ng-hide="isSubscribed">Unubscribe</span>
</button>
这将调用正确的函数,并显示正确的文本,具体取决于isSubscribed
。
但是,更清晰的选择是在控制器中处理这个问题,导致类似HTML:
<button class="btn btn-primary subscribe-btn"
ng-controller="ButtonController"
ng-click="toggleSubscribe()" >
{{subscribeButton}}
</button>
只需根据用户是否订阅设置按钮的文本:
app.controller('ButtonController', ['$scope', function($scope) {
$scope.subscribed = false;
$scope.subscribeButton = $scope.subscribed ? 'Unsubscribe' : 'Subscribe';
$scope.toggleSubscribe= function() {
$scope.subscribed = !$scope.subscribed; // Handle subscription...
};
}]);
现在,更好的方法是通过创建custom element directive:
来使用模板app.directive('subscribeButton', function() {
return {
templateUrl: 'subscribe-button.html'
};
});
答案 1 :(得分:2)
您可以拥有的按钮:
<button ng-init="subscribed = true" class="btn btn-primary subscribe-btn" ng-click="changeSubscription()" >
{{button}}
</button>
在你的app.controller中你可以拥有
$scope.changeSubscription() = function(){
if($scope.subscribed){
$scope.button = "subscribe";
$scope.subscribe = false;
unsubscribe();
}else{
$scope.button = "unsubscribe";
$scope.subscribe = true;
subscribe();
}
}