1.ajaxIndex.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<span style="color:#FF0000;"><script src="../js/jquery.min.js"></script>
<script src="./ajaxDeal.js"></script></span>
</head>
<body>
<span style="color:#FF0000;"><span id="pos_placeholder" style="width: 0px; height: 0px; visibility: hidden; margin: 0px; padding: 0px;"></span><input type="text" id="namevalue">
<br />
<button id="btn">Send</button>
結果：<span id="result"></span></span>
</body>
</html>$(document).ready(function(){
$("#btn").on("click",function(){
$.post("ajaxServer.jsp",{name:$("#namevalue").val()},function(data){
$("#result").text(data);
});
});
});也可以這樣寫：
var name="name="+$("#namevalue").val();
$.post("ajaxServer.jsp",name,function(data){
$("#result").text(data);
//$("#result").html(data);
});ajaxServer.jsp
<%
String str=request.getParameter("name")+"";
if("null".equals(str)){
out.print("Args Error");
}else{
out.print("Hello "+str);
}
%>result：ajax異步請求訪問，頁面不刷新
