Edit in JSFiddle

var callApi1 = function(){
  $("body").append("<h4>api 1 is now complete</h4>");
  return $.ajax({url: "https://locahost:3000/api1"});
}

var callApi2 = function(){
  $("body").append("<h4>api 2 is now complete</h4>");  
  return $.ajax({url: "https://locahost:3000/api2"});
}

var callApi3 = function(){
  $("body").append("<h4>api 3 is now complete</h4>");  
  return $.ajax({url: "https://locahost:3000/api3"});
}


callApi1().then(null,callApi2).then(null,callApi3);

<body/>