从javascript对象返回值 [英] Returning value from javascript object

问题描述

我创建了一个javascript对象，并尝试从中获取som数据. 我使用jquery ajax来获取发送一些值，然后从php脚本重现它们. 这行得通，但是当我尝试使用我的javascript对象的实例显示该值时，我会得到未定义".

I have created a javascript object and im trying to fetch som data from it. Im using jquery ajax to fetch send some values and then returing them from a php script. this works, but when i try to use an instanse of my javascript object to dispaly the value i get 'undefined'.

对象:

var getDBresults = (function () {   
    function getResult(url,TableName ,callback){
        $.ajax({
            url: url,
            type: 'POST',
            data: {
                'table':TableName,
            },
            success: function(data){
                callback(data);
            },
            error: function(event){
                alert(event.error);
            }

        });
    }   
    return {
        getAllVideoes: function(){
            getResult("getAllResults.php", "videoer", function(data){
                console.log(data); //Works
                return data;
            });
        },
    }

})();

在我的其他脚本中:

var obj = getDBresults;
var data = obj.getAllVideoes(); //this runs, and produce the log showed above
console.log(data) //results in undefined
    console.log(obj.getAllVideoes()) //results in undefined

推荐答案

也许您可以使用回调来解决您的异步问题:

Maybe you can use callbacks it will solve your async problems: http://recurial.com/programming/understanding-callback-functions-in-javascript/

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