JSTL - fn:startsWith() 函式

fn:startsWith() 函式確定輸入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)

示例

以下示例說明了 fn:startsWith() 函式的功能 -

<%@ taglib uri = "http://java.sun.com/jsp/jstl/core" prefix = "c" %>
<%@ taglib uri = "http://java.sun.com/jsp/jstl/functions" prefix = "fn" %>

<html>
   <head>
      <title>Using JSTL Functions</title>
   </head>

   <body>
      <c:set var = "string" value = "Second: This is first String."/>
      
      <c:if test = "${fn:startsWith(string, 'First')}">
         <p>String starts with First</p>
      </c:if>
      
      <br />
      <c:if test = "${fn:startsWith(string, 'Second')}">
         <p>String starts with Second</p>
      </c:if>
   
   </body>
</html>

您將收到以下結果 -

String starts with Second

jsp_standard_tag_library.htm

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