有效沟通问答-【官方】百战程序员_IT在线教育培训机构

<!DOCTYPE html>
<html>

    <head>
        <meta charset="utf-8">
        <title></title>
        <script>
            //三种弹窗
            function demo1(){
                //只有确定按钮
                window.alert("弹框");
            }
            function demo2(){
                //有确定、取消按钮，返回一个boolean值
                var f=window.confirm("是否删除");
                window.alert(f);
            }
            function demo3(){
                //只有确定按钮
                var name=window.prompt("请输入名字","例如：李白");
                window.alert(name);
            }
            /*定时器*/
            function gettime(){
                var date=new Date();
                var time=date.toLocaleString();
                var span=document.getElementById("span");
                span.innerHTML=time;
            }
            var time=window.setInterval("gettime()",1000);
            
            function demo4(){
                window.clearInterval(time)
            }
                    
            function demo5(){
                window.open("http://www.baidu.com")
            }
            function demo6(){
                window.close();
            }
        </script>
    </head>

    <body onload="gettime()">
        <!--三种弹窗-->
        <p>
            <input type="button" value="弹框1" onclick="demo1()" />
        </p>
        <p>
            <input type="button" value="弹框2" onclick="demo2()" />
        </p>
        <p>
            <input type="button" value="弹框3" onclick="demo3()" />
        </p>

        <hr />
        <!--定时器-->
        <p>目前的时间是：<span id="span"></span></p>
        <p>
            <input type="button" value="清除计时器" onclick="demo4()" />
        </p>

        <hr />
        <!--打开或关闭浏览器-->
        <p>
            <input type="button" value="百度" onclick="demo5" />
        </p>
        <p>
            <input type="button" value="关闭" onclick="demo6" />
        </p>
        <a href="http://www.baidu.com" target="_blank">百度一下</a>
    </body>

</html>

然后我重新建了个html，只写这两个方法，就只有open可以打开，close不能关闭，这是什么原因呢？

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
        <script>
            function demo1(){
                window.open("http://www.baidu.com");
            }
            function demo2(){
                window.close();
            }
        </script>
    </head>
    <body>
        <input type="button" value="百度一下" onclick="demo1()" />
        <input type="button" value="关闭" onclick="demo2()" />
    </body>
</html>

JAVA 全系列/第四阶段：网页编程和设计/Javascript 语言（旧） 32572楼

//老师，我想问一下我这出现乱码怎么解决也加入utf-8这个格式了还是乱码

package com.bjsxt.server;

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class Server3 {
    public static void main(String[] args) {
        String CRLF = "\r\n";//换行
        String BLANK= " ";
        //(1)创建ServerSocket对象
        ServerSocket server = null;
        Socket client = null;
        InputStream is = null;

        try {
            server = new ServerSocket(8888);
            //(2)监听是否有客户端发送请求
            client = server.accept();
            //获取来自浏览器的请求信息
            is = client.getInputStream();
            byte[] buf = new byte[20480];
            int len = is.read(buf);
            System.out.println(new String(buf,0,len));
            /*对web浏览器的请求作出响应*/
            StringBuilder sb = new StringBuilder();
            StringBuilder sbContent = new StringBuilder();//响应的文本
            sbContent.append("<html><head><title>响应结果</title></head>");
            sbContent.append("<body>登陆成功</body></html>");
            //（1）拼接响应头
            sb.append("HTTP/1.1").append(BLANK).append(200).append(BLANK).append("OK");
            sb.append(CRLF);
            sb.append("Content-Type:text/html;charset=uft-8");
            sb.append(CRLF);
            sb.append("Content-Length:").append(sbContent.toString().getBytes().length).append(CRLF);
            sb.append(CRLF);//换行，代表响应头与响应正文部门之间的空行
            sb.append(sbContent);
            //通过流输出
            BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(client.getOutputStream(),"utf-8"));
            bw.write(sb.toString());
            bw.flush();
            bw.close();

        } catch (IOException e) {
            e.printStackTrace();
        }finally {

            //（6）关闭流
            IOClose.closeAll(is, client, server);
        }
        }

}