
XMLHTTP對(duì)象參考
onreadystatechange
指定當(dāng)readyState屬性改變時(shí)的事件處理句柄
語(yǔ)法
oXMLHttpRequest.onreadystatechange = funcMyHandler;
Example
如下的例子演示當(dāng)XMLHTTPRequest對(duì)象的readyState屬性改變時(shí)調(diào)用HandleStateChange函數(shù),當(dāng)數(shù)據(jù)接收完畢后(readystate == 4)此頁(yè)面上的一個(gè)按鈕將被激活
var xmlhttp=null; function PostOrder(xmldoc) { var xmlhttp = new ActiveXObject("Msxml2.XMLHTTP.5.0"); xmlhttp.Open("POST", "http://myserver/orders/processorder.asp", false); xmlhttp.onreadystatechange= HandleStateChange; xmlhttp.Send(xmldoc); myButton.disabled = true; } function HandleStateChange() { if (xmlhttp.readyState == 4) { myButton.disabled = false; alert("Result = " + xmlhttp.responseXML.xml); } }