Ajax实例

<script language="javascript">
    var xmlHttp;
    function createXMLHttpRequest() {
        if (window.ActiveXObject) {
            xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        else if (window.XMLHttpRequest) {
            xmlHttp = new XMLHttpRequest();
        }
    }
   
    function handleStateChange() {
        if(xmlHttp.readyState == 4) {
            if(xmlHttp.status == 200) {
                var div_id = document.getElementById("div_id").value;
                document.getElementById(div_id).innerHTML = xmlHttp.responseText;
                document.getElementById(div_id).style.display = "block";
            }
        }
    }
   
    function onPerformens(id,id1){
        document.getElementById(id1).disabled = "true";
        document.getElementById("div_id").value = id;
        alert(document.getElementById("div_id").value);
        createXMLHttpRequest();
        xmlHttp.onreadystatechange = handleStateChange;
   
        xmlHttp.open("GET","/ksyoa/kj/cjbk/excute.jsp?id="+id, true);
        xmlHttp.send(null);
    }
</script>