Ajax初学的必用语句

2009-08-07 15:25:11 by 【6yang】, 63 visits, 收藏 | 返回

<html>
<body>

<script type="text/javascript">

function ajaxFunction()
 {
 var xmlHttp;
 
 try
    {
   // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
 catch (e)
    {

  // Internet Explorer
   try
      {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
   catch (e)
      {

      try
         {
         xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
         }
      catch (e)
         {
         alert("您的浏览器不支持AJAX!");
         return false;
         }
      }
    }
 
    xmlHttp.onreadystatechange=function()
      {
      if(xmlHttp.readyState==4)
        {
         document.myForm.time.value=xmlHttp.responseText;
        }
      }
    xmlHttp.open("GET","date.php",true);
    xmlHttp.send(null);
 
 }
</script>

<form name="myForm">
用户: <input type="text" name="username" onkeyup="ajaxFunction();" />
时间: <input type="text" name="time" />
</form>

</body>
</html>

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