prototype.js簡單實現ajax功能示例

<script type="text/javascript">
function getnodelist(){
 function onSuccess(request)
 {
 alert("success");
 $("result").innerHTML = "abc"+request.responseText ;
 }
 function onComplete(request){
 }
 function onFailure(request){
 alert("failure");
 $("result").innerHTML = request.responseText ;
 }
 var paras = "" ;
 var ajax = new Ajax.Request(
 "http://localhost:8080/LoginDemo/test.do",
 {
 method: 'post',
 parameters:paras ,
 onSuccess: onSuccess,
 onComplete:onComplete,
 onFailure:onFailure
 }
 );
}
</script>

var ajax = new Ajax.Request( //新生成一個AJAX.Request對象.
 "http://localhost:8080/LoginDemo/test.do", //請求的servlet地址.即URL
 { //參數
 method: 'post',
 parameters:paras ,
 onSuccess: onSuccess, //這些函數和上面三個函數相對應.
 onComplete:onComplete,
 onFailure:onFailure
 });

public ActionForward execute(
 ActionMapping mapping,
 ActionForm form,
 HttpServletRequest request,
 HttpServletResponse response) {
 // TODO Auto-generated method stub
 try{
 System.out.println("in action");
 response.setContentType("text/html;charset=gb2312");
 ServletOutputStream out = response.getOutputStream();
 out.print("hello slf!");
 System.out.println("out");
 }catch(Exception e)
 {
 e.printStackTrace();
 }
 return null;
 }