변수 선언해주는 jstl 태그
<%@page import="java.util.Date"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!-- jstl을 사용하기 위해서 지시부 설정 -->
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/css/bootstrap.min.css" integrity="sha384-B0vP5xmATw1+K9KRQjQERJvTumQW0nPEzvF6L/Z6nronJ3oUOFUFpCjEUQouq2+l" crossorigin="anonymous">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/js/bootstrap.bundle.min.js" integrity="sha384-Piv4xVNRyMGpqkS2by6br4gNJ7DXjqk09RmUpJ8jgGtD7zP9yug3goQfGII0yAns" crossorigin="anonymous"></script>
</head>
<script>
var a =new Date();
</script>
<body>
<h1>set Tag: 변수 선언 및 삭제</h1>
<%
int a = 200;
int b = 200;
%>
<c:set var="num" value="${300}"/>
<c:set var="num2" value="${a+300}"/>
<c:set var="username">세종대왕</c:set>
<c:set var="today" value="<%=new Date()%>"></c:set>
<h1>변수 사용하기</h1>
a = ${a}<br/>
b = ${b}<br/> <!-- jsp에서 선언한건 안나와여 -->
num = ${num}<br/>
username = ${username}<br/>
today = ${today}<br/>
</body>
</html>
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