问两个AJAX调用:成功后将内容同时呈现给浏览器

EN

(function() {
   var executedAmount = 0;
   var datas = {};
   //Ajax call 1:
   $.ajax({
      'success': function(data) {
          executedAmount++;
          datas[0] = data;
          callBack();
      }
   });
   //Ajax call 2:
   $.ajax({
      'success': function(data2) {
          executedAmount++;
          datas[1] = data2;
          callBack();
      }
   });
   function callBack() {
      if (executedAmount == 2) {
          //Do something with datas here
      }
   }
})();

$.when($.ajax("/page1.php"), $.ajax("/page2.php")).done(function(a1,  a2){
    /* a1 and a2 are arguments resolved for the 
        page1 and page2 ajax requests, respectively */
   var jqXHR = a1[2]; /* arguments are [ "success", statusText, jqXHR ] */
   if ( /Whip It/.test(jqXHR.responseText) ) {
      alert("First page has 'Whip It' somewhere.");
   }
});