fn:startsWith()
函式確定輸入的字串是否以指定的子字串開頭。
語法
fn:startsWith()
函式具有以下語法 -
boolean startsWith(java.lang.String, java.lang.String)
以下範例將顯示如何使用fn:startsWith()
函式,編寫一個JSP檔案:fn_startsWith.jsp 如下所示:
<%@page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jstl fn:startsWith()函式</title>
</head>
<body>
<div style="margin: auto; width: 90%">
<h2>fn:startsWith()函式範例</h2>
<hr />
<c:set var="string" value="Title: This is the tutorials from tw511.com." />
<p>原字串:<c:out value="${string }"/></p>
<c:if test="${fn:startsWith(string, 'First')}">
<p>String starts with 'First'</p>
</c:if>
<c:if test="${fn:startsWith(string, 'Title')}">
<p>String starts with 'Title'</p>
</c:if>
</div>
</body>
</html>
執行上述專案程式碼,得到以下結果如下 -