<C: if> tag
Next: <c: choose>, < c: when>, <c: otherwise> tag
<C: if> tag value judgment expression, if the expression evaluates to true executes its main content.
Syntax
<c:if test="<boolean>" var="<string>" scope="<string>"> ... </c:if>
Attributes
<C: if> tag has the following attributes:
| Attributes | description | If necessary | Defaults |
|---|---|---|---|
| test | condition | Yes | no |
| var | Condition variables are used to store the result | no | no |
| scope | Scope var attribute | no | page |
The demonstration
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<html>
<head>
<title>c:if 标签实例</title>
</head>
<body>
<c:set var="salary" scope="session" value="${2000*2}"/>
<c:if test="${salary > 2000}">
<p>我的工资为: <c:out value="${salary}"/><p>
</c:if>
</body>
</html>
Results are as follows: 我的工资为: 4000
Next: <c: choose>, < c: when>, <c: otherwise> tag