AjaxÔÀí
<script type="text/javascript">
var xmlHttp;
function createXMLHttpRequest() {
if (window.ActiveXObject) {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else if (window.XMLHttpRequest) {
xmlHttp = new XMLHttpRequest();
}
}
function startRequest() {
createXMLHttpRequest();
xmlHttp.open("GET", "simpleResponse.xml", true);
xmlHttp.onreadystatechange = handleStateChange;//ÎÊÌâ1:handleStateChangeÊÇÒ»¸ö·½·¨ Ϊʲô²»¼Ó()???
xmlHttp.send(null);//ÎÊÌâ2:ÇëÇóµÄÊÇʲô??
}
function handleStateChange() {
if(xmlHttp.readyState == 4) {
if(xmlHttp.status == 200) {
alert("The server replied with: " + xmlHttp.responseText);
}
}
}
</script>
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