Question

I am making a simple JSON post to the server and I retrieve just on boolean. The problem is that this json call is inside another function which needs to return that boolean as well.

I have two solutions here

1. Somehow return data from JSON return function and then return it again from wrapper function (the code that I have here doesn’t work, I can’t figure out how to return data from “function(){} inside $.postJSON:

       function testZipCode(zipcode, state) {
       var s;
       $.postJSON("/Cart/ZipTest",
           {
               state: state,
               zipCode: zipcode
           }, function (data) {
               if (!data.ok) {
                   s = false;
               }
               s = true;
           });
           return s;
   }
   

   }

2. Wait for POST to finish and then return the result like this: (the error I get here is that I call return before POST is finished, thus responseText is null. Can anyone please help?

    var result = $.postJSON("/Cart/ZipTest",
    {
               state: state,
               zipCode: zipcode
           }, function (data) {
               if (!data.ok) {
                   //do something
               }
           });
           return $.parseJSON(result.responseText).ok;
   

Answer 1

Return the ajax call as a deffered object and do something in the callback function:

function someOtherFunction() {
    testZipCode('90102', 'FL').done(function(data) {
        if (!data.ok) something = false;
    });

}

function testZipCode(zipcode, state) {
    return $.getJSON("/Cart/ZipTest", {state: state, zipCode: zipcode} );
}​