1 function ajaxFunction(){
2 var xmlHttp;
3 try {
4 //firefox,opera,safari
5 xmlHttp = new XMLHttpRequest();
6 } catch (e) {
7 try {
8 //Internet explore
9 xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
10 } catch (e) {
11 try {
12 xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
13 } catch (e) {
14 }
15
16 }
17 }
18 return xmlHttp;
19 }
1 function func02(){
2 var request = ajaxFunction();
3 request.open("GET","servletURL",true);
4 //request.open("POST","servletURL",true);
5 request.send();
6 }
1 function func01(){
2 //创建ajax对象
3 var myrequest = ajaxFunction();
4
5 //发送请求
6 myrequest.open("POST","DemoServlet01",true);
7 myrequest.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
8 myrequest.onreadystatechange = function(){
9 if(myrequest.readyState == 4 && myrequest.status == 200){
10 alert(myrequest.responseText);
11 }
12
13 }
14 myrequest.send("name=aliy&age=19");
15 }
- 使用GET方式请求时可能得到的是缓存的结果，可以通过向url中添加唯一的uid来解决
1 xmlhttp.open("GET","demo_get.asp?t=" + Math.random(),true);
2 xmlhttp.send();