[html] view plain copy<script type="text/javascript" src="http://www.youxiaju.com/js/jquery-1.4.2.min.js"></script>  <script type="text/javascript">  $(function(){  $.ajax(      {          type:'get',          url : 'http://www.youxiaju.com/validate.php?loginuser=lee&loginpass=123456',          dataType : 'jsonp',          jsonp:"jsoncallback",          success  : function(data) {              alert("用户名："+ data.user +" 密码："+ data.pass);          },          error : function() {              alert('fail');          }      }  );  })  </script>  

<?php  header('Content-Type:text/html;Charset=utf-8');  $arr = array(      "user" => $_GET['loginuser'],      "pass" => $_GET['loginpass'],      "name" => 'response'    );  echo $_GET['jsoncallback'] . "(".json_encode($arr).")";