Question

If I do an AJAX post with jQuery that looks like

 $.post('MyApp/GetPostResult.json', function(data) {
    // what goes here?
 });

and the result looks like

{
    "HasCallback": true,
    "Callback": "function(){ alert('I came from the server'); }"
};

Then how do I call the Callback function? Can I just write if(data.HasCallback){data.Callback();} ?

Answer 1

This should work:

function(data) {
  if(data.HasCallback) {
    eval(data.Callback);
  }
}

Edit: Didn’t look quite carefully enough. If you’re indeed getting the function() { ... } text, then you need to eval(data.Callback + "()").