1 Ajax简介

1 ajax概念

2 什么是同步？什么是异步？

3 ajax原理

2 JavaScript原生的ajax

 1 ajax.html代码

2 AjaxServlet代码

package www.test.ajax01;import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class AjaxServlet extends HttpServlet {    protected void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {                //response.getWriter().write("zhangsan");                /*try {            Thread.sleep(5000);        } catch (InterruptedException e) {            e.printStackTrace();        }*/                String parameter = request.getParameter("name");                response.getWriter().write(Math.random()+parameter);            }    protected void doPost(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        doGet(request, response);    }}

3 注意事项

4 ajax图解