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function createXMLHttpRequest(){
if(window.ActiveXObject){
http = new ActiveXObject("Microsoft.XMLHTTP");
}else if(window.XMLHttpRequest){
http=new XMLHttpRequest();
}
}
function send(){
createXMLHttpRequest()
url="b.asp";//µ÷ÓÃÒ³Ãæ!
http.open("POST",url,true);//²ÉÓÃPOST·½Ê½£¬Í¬²½·½Ê½·¢ËÍ
http.setRequestHeader('Content-type','application/x-www-form-urlencoded');
http.onreadystatechange=loadings
http.send(null);//¹¹ÔìÒ»¸öXML¶ÔÏó²¢·¢ËÍ
}
function loadings(){
if(http.readyState==4){
if(http.status==200){
alert("¼ÓÔØÍê³É")//Õâ¸öµØ·½²»ÖªµÀÔõôȥ»ñµÃb.aspµÄÐÅÏ¢,»ñÈ¡²»µ½
// alert(http.responseText);//ÕâÑùºÃÏóÒ³Ãæ´ò³öÀ´Ã»Ê²Ã´Óô¦ÒòΪȫÊÇhtml´úÂë/
}else{
alert("¼ÓÔØÊ§°Ü")
}
}
}
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<input type="button" onclick="test();" value="Ìá½»"/>
<script type="text/javascript">
function test(){
var valid = {
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