目录

fn:startsWith()

fn:startsWith()函数确定输入字符串是否以指定的子字符串开头。

语法 (Syntax)

fn:startsWith()函数具有以下语法 -

boolean startsWith(java.lang.String, java.lang.String)

例子 (Example)

下面的例子解释了fn:startsWith()函数的功能 -

<%@ 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>

您将收到以下结果 -

String starts with Second
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