JavaScript第二次作业

1.p39   实验2 显示当前时间，并输出上午(0-12)好,下午好(13-17),晚上好(18-23)

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'index.jsp' starting page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
  </head>
  
  <body>
  <%
　//java注释
  Date d=new Date();
  int h = d.getHours();//获取当前小时
  int m =d.getMinutes();//获取当前分钟
  int s =d.getSeconds();
  out.print("当前时间为："+h+":"+m+":"+s); 、
  if(h>=0&&h<12){ out.print("早上好！");} 
  else if(h>=13&&h<=17){ out.print("下午好！");} 
  else if(h>=18&&h<=23){ out.print("晚上好！");} 
  %> 
   </body> 
  </html>

　　

 

 

 

2. 使用声明方法,在页面调用该方法,判断2023是不是闰年
闰年：能被4整除但不能被100整除或者能被400整除

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%!
boolean P(int year){
if(year%4==0&&year%100!=0||year%4000==0){
return true;
}
return false;
}

 %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    <!--HTML注释-->
    <title>My JSP 'index.jsp' starting page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
  </head>
  
  <body>
  <%
boolean f =P(2023);
out.print(f);
  %>
  </body>
</html>

　　

 

 

 

3.表达式+程序段 循环输出5条<hr>,长度分别为100px-500px
<hr width="<%=i%>"

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'index.jsp' starting page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
  </head>
  
  <body>
  <%
for(int i=1;i<=5;i++){
%><hr width="<%=i*100%>px" color="red">
<% } %>
  </body>
</html>

　　

 

 

 


4.在第一题上加Java注释,第二题加html注释,第三题加jsp注释

 

 

posted @ 2022-03-09 11:43  樽梦  阅读(41)  评论(0)    收藏  举报