Question

   //declaring the module
   var app = angular.module("sachin", ["ng-fusioncharts"]);
    //declaring a factory  
    app.factory('team',function(){
    return {
            runs_aus : ''
        };
    });

    app.controller("myCtrl", function($scope,$http,team){
        $scope.australia=[];    
        $scope.total_runs_aus=0;
        //fetching data from JSON
        $http.get("convertcsv.json").then(function(response){
        $scope.sachin_data=response.data;
        angular.forEach($scope.sachin_data, function(value, key){
             // manipulating data
            if (value.opposition=="v Australia"){
            if (value.batting_score=="-"|| value.batting_score == "TDNB" || value.batting_score == "DNB")
                $scope.total_runs=$scope.total_runs;
            else if (value.batting_score.substr(value.batting_score.length - 1) == "*"){
                value.batting_score = value.batting_score.substr(1);
                $scope.total_runs_aus+=parseInt(value.batting_score,10)
            }
            else
                $scope.total_runs_aus+=parseInt(value.batting_score,10);

        });
        $scope.australia.push({ runs:$scope.total_runs_aus});
        team.runs_aus=$scope.total_runs_aus;
        //got final result in $scope.total_runs_aus
        console.log(team.runs_aus);
        //printing inside the scope(works fine)
        });
        console.log(team.runs_aus);
        //printing outside the scope(can't access)

我正在尝试访问外部得分然后（获取请求的函数（））
首先我在javascript中尝试了全局变量
现在我尝试使用工厂任何帮助将不胜感激

Answer 1

您可以使用服务存储该数据：

app.service('MyService', function() {

    var self = {
        'myString': 1,
        'myObject': {},
        'myArray': [],
        'doSomething': function(param) {
            self.myString = param
        },
        'anotherFunction': function() {
            return true;
        }
    }

    return self;

});

您只需要在控制器上注入MyService并像MyService.myObject = something一样访问它。

Answer 2

要理解的重要部分是您正在使用异步操作。即使尚未从$http.get()返回数据，代码仍继续执行并打印控制台日志。您的代码需要对此进行说明，并在解析后运行对数据进行操作的代码。

.then（）需要一个函数作为方法签名的参数。例如：

$http.get("convertcsv.json").then(function(response){
    $scope.sachin_data=response.data;
}).then(function() {
    console.log('Value in scope:', $scope.sachin_data);
});

或

function processData = function() {
    console.log('Value in scope:', $scope.sachin_data);
};

$http.get("convertcsv.json").then(function(response){
    $scope.sachin_data=response.data;
}).then(processData);

或将多个promise链接在一起（你必须添加angular的$ q作为依赖）：

function processData1 = function(data) {

    //Create a deferred object.
    var defer = $q.defer();

    //Do something with data.
    console.log('Value in scope:', data);

    //Pass data to next promise in promise chain.
    defer.resolve(data);

    //Resolve data to be returned.
    return defer.promise;
};

function processData2 = function(data) {

    //Create a deferred object.
    var defer = $q.defer();

    //Do something else with data.
    console.log('Value in scope:', data);

    //Pass data to next promise in promise chain.
    defer.resolve(data);

    //Resolve data to be returned.
    return defer.promise;
};



$http.get("convertcsv.json")
     .then(processData1)
     .then(processData2);

请看一下：

由于尚未经过测试，因此代码可能存在语法错误。链接是一般参考，不是特定于$ q，但概念是一致的。

如何在Angular JS的特定范围之外访问我的数据？

2 个答案: