如何清除离子中的本地存储数据？

Here is my code.

这是我的代码。

$scope.logout=function(){
    localstorage.set('user_id', "");
    localstorage.set('access-token', "");
    localstorage.set('isUserTraverseColony', 0);
    localstorage.set('isStarted', 0);
    $window.localStorage.clear();
    $window.localStorage.removeItem(access-token);
    $ionicHistory.clearCache();
    $ionicHistory.clearHistory();
 };
$scope.logout=func