Wait for N or Multiple or Unknown number (Depends on some logic) of ajax request using JQuery

wait_for_2_req.coffee

class Test
  
  waitForTwoCalls: () ->
    $.when(@firstCall(), @secondCall()).then () =>
      doSomeThing()
  
  firstCall: () ->
    token = $.Deferred
    $.ajax({
      url: foo/bar,
      ....
      success: (response) =>
        token.resolve
    })
  
  secondCall: () ->
    token = $.Deferred
    $.ajax({
      url: foo/bar,
      ....
      success: (response) =>
        token.resolve
    })