Using Jquery $When to make async and sync function calls

Question

I need to make a async call and a synchronous call and when both the calls are over, I need to call another function. I am using JQuery when for this purpose. This functions works fine when I make multiple async calls but when I make synchronous call, I get error. I am using below code to make the call.

var requestTwo = function() {
        var v = 10;
        var j = 20;
        var k = v + j;
    };

    $.when($.get(url, function (result, status, xhr) {
        myresult = result;
    })),
    (requestTwo).then(function (r1, r2) {
        //DO something

     });

I am getting following error:

JavaScript runtime error: Object doesn't support property or method 'then'

Answer 1

As I understand your second argument of 'when' function must be a promise. Look here http://learn.jquery.com/code-organization/deferreds/#promises. And it seems to be a typo in your code

Answer 2

You don't need $.when for synchronous function calls, just call them

$.get(url, function (result, status, xhr) {
    var myresult = result;
    requestTwo();
     // DO something here, it's synchronous and single threaded, 
     // so the function will be finished
});