功能上的承诺,angularjs

时间:2016-05-30 10:49:31

标签: javascript angularjs promise

如何实现承诺功能,以便我可以摆脱超时,如果可能的话?我从工厂'Prim'获得了一些数据,功能看起来像是:

$scope.getPre = function(id){

 var url = WEB_API.MainUrl + '/api/prim/' + id +'/' + $window.sessionStorage.getItem('idsom');

    Prim.getprim(function(data) {

        $scope.prim1 = data;
        $scope.prim = $scope.prim1[0];

    }, url); 

    $scope.$apply();

}

和我想要摆脱的超时:

setTimeout(function() { // it can't work without timeout
    $scope.getPre($routeParams.idprim);
}, 100);

1 个答案:

答案 0 :(得分:0)

您的函数应该返回一个承诺,因此您可以使用.then()

$scope.getPre = function(id){
    var deferred = $q.defer()
    var url = WEB_API.MainUrl + '/api/prim/' + id +'/' + $window.sessionStorage.getItem('idsom');

    Prim.getprim(function(data) 
        $scope.prim1 = data;
        $scope.prim = $scope.prim1[0];
        deferred.resolve();
    }, url);

    return deferred.promise;
}

然后就这样使用它:

$scope.getPre($routeParams.idprim).then(function () {
    // Do whatever you did after setTimeout
});