带有jsonp的同步AJAX

Question

I have the following problem: there is no way to turn off asyncronous mode in $.ajax when using jsonp (http://api.jquery.com/jQuery.ajax/, async section). So the code

module = (function($)
{
    var result = null;

    var request = function(inputData)
    {
        $.ajax({
           url: "http://some.site",
           type: "post",
           data: inputData,
           dataType: "jsonp",
           success: function(response)
           {
                result = response;
           } 
        });

        return result;
    }
})($);

console.log(module.request());

will result in "null" on the first call, and in actual data on the second one. So how can I make javascript wait for ajax to complete request and only after that return the result?

Answer 1

It's not possible. You'll have to re-organize your code to work asynchronously. Here, i'll do it for you.

var module = (function($) {
    var request = function(inputData) {
        return $.ajax({
           url: "http://some.site",
           //type: "post",
           data: inputData,
           dataType: "jsonp"
        });
    }
    return { request: request };
})($);

module.request().done(function(result){
    console.log(result);
});

Also fixed a few other small mistakes, i assume those were just copy paste issues.