如何将$.Ajax对象传递给另一个函数?

function f_AjaxFunction(_param, callback) {
  $.ajax({
      type: "POST",
      contentType: "application/json; charset=utf-8",
      url: 'WS/wsGenral.asmx/f_QueryAndGetResultAsJson',
      data: "{_sParam:'" + _param + "'}",
      dataType: "json",
      success: function(data) {
          var txt = "";
          try {
              if($.isFunction( callback(data) )){
                callback(data);
              }
          }
          catch (err) {
              alert(err.description);
          }
      }
  });
}

function f_HavaDurumu(_paramm) {
    f_AjaxFunction(_paramm, function(data){
      $("#spanShow").html(data.d);  
    });
}

function get_ajax(){
    var ran = false;
    $.ajax({ 'url':'/some/url', success: function(data){
        ran = true;
    });
    return ran;
}

alert(get_ajax()); // alerts "false"

1. run false

Javascript Strands