Deferred and Ajax

Question

Reading a JSON-Service like this:

$.ajax({
  url:\'activeIDs\',
  success : function(data){ // data = [14,15]
    var tableRows = [];
    for (var dataIndex=0; d         


        

Answer 1

Why do you want $.Deferred ? Your $.ajax calls are returning a promise, so, you can use it:

var promisesArray = [];
for (var dataIndex=0; dataIndex < data.length; dataIndex++) {
  promisesArray.push($.ajax({...}));
}
 $.when.apply($, promisesArray).then(...);

(inspired by this answer)

You can use deferreds by taking this solution and passing it to a deferred if you want, but it's not neccesary:

var x = $.Deferred(function(defer){  
    var promisesArray = [];
    for (var dataIndex=0; dataIndex < data.length; dataIndex++) {
      promisesArray.push($.ajax({...}));
    }
     $.when.apply($, promisesArray).done(function(data) { defer.resolve(data); });
});
return x.promise();

(Not tested, I'm sorry)