javascript ajax 实例

<script language="javascript">
function deleteobject(id)...{

    if (window.XMLHttpRequest)...{
            xmlhttp = new XMLHttpRequest();
        }else...{
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        }

　　xmlhttp.onreadystatechange = processStateChange;
　　xmlhttp.open("GET", "deltest.asp?random="+Math.random()+"&id="+id, false);
　　xmlhttp.send(null);
    function processStateChange()...{
        if (xmlhttp.readyState == 4)...{
        　　if (xmlhttp.status == 200)...{
                if(xmlhttp.responseText=="ok")...{
            　　　var aDel = document.getElementById("del"+id);
                        while("tr" != aDel.nodeName.toLowerCase())
                        ...{
                               aDel = aDel.parentNode;
                        }
                        aDel.parentNode.removeChild(aDel);
                    alert("删除成功");
                }else...{
                    alert("删除失败");
                }
        　　}else...{
                document.getElementById("getvalue").innerHTML=xmlhttp.statusText;
            }
    　    }
    }
}
</script>