Retrieve the value of the callback function from outside the callback function (ajax)

My dilemma involves returning a callback value outside of the callback function. Here's an example:

I created this function based on the topic discussed in: How do I return the response from an asynchronous call?

(function (){

    return getAjaxResult(function(result) { return result; }); 
     //<-- Return Undefined (in console log return correct value)
})();

function getAjaxResult(callback){
    $.ajax({
       url: 'myurl',
       type: 'GET',
        success: function (result) 
        {
           if (result === 'working'){
                callback(result);
          }else if (result === 'notworking'){
                callback('notworking');
          }
        }
      })
 }

It returns "Undefined" (even though the console log shows the correct value).

I'm unsure if this is the most efficient way to return an ajax value in a callback function.

Answer №1

If you're looking to achieve this task, there are actually two methods you could try out. The first method involves using async false, however, it is considered deprecated. Alternatively, you can opt to use a promise:

Start by creating a function like the one shown below:

function fetchData(id){
  return   $.ajax({
    method: "POST",
    url: "../YourUrl",
    data: {  id: id}
  })
}

You can then proceed to call the function as demonstrated here:

if (id != '')//
{
    fetchData(id)
               .done(function( response ) {
                               //handle the response accordingly
                            });
}

I hope this solution proves helpful to you.

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