Javascript 闭包访问与循环内的回调

Question

我该怎么做才能让最后一行代码返回一个值？

$scope.runActionwithObjects = function() {

            for (var i = 0; i < $scope.Objects.length; i++) {
                console.log($scope.Objects[i]); //$scope is accessible
                $http.get($scope.Objects[i]["Commit"]).success(function (data) {
                    console.log($scope.Objects[i]);//return undefined

Answer 1

该问题是由于 ajax 请求异步造成的。

当执行success回调时，您的循环已经完成并且i变量已经等于$scope。对象.length.

尝试forEach 。该函数将为数组中的项目创建不同的闭包。

$scope.Objects.forEach(function(currentObject){
    console.log(currentObject); //$scope is accessible
    $http.get(currentObject["Commit"]).success(function (data) {
        console.log(currentObject);
    });
});