Wait until all jQuery Ajax requests are done?

Question

How do I make a function wait until all jQuery Ajax requests are done inside another function?

In short, I need to wait for all Ajax requests to be done before I exe

Answer 1

My solution is as follows

var request;
...
'services': {
  'GetAddressBookData': function() {
    //This is the primary service that loads all addressbook records 
    request = $.ajax({
      type: "POST",
      url: "Default.aspx/GetAddressBook",
      contentType: "application/json;",
      dataType: "json"
    });
  },

  ...

  'apps': {
    'AddressBook': {
      'data': "",
      'Start': function() {
          ...services.GetAddressBookData();
          request.done(function(response) {
            trace("ajax successful");
            ..apps.AddressBook.data = response['d'];
            ...apps.AddressBook.Filter();
          });
          request.fail(function(xhr, textStatus, errorThrown) {
            trace("ajax failed - " + errorThrown);
          });

Worked quite nicely. I've tried a lot of different ways of doing this, but I found this to be the simplest and most reusable. Hope it helps