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閑的蛋疼，示範一下Jquery外掛程式placeholder的用法，藉助該外掛程式能夠輕鬆實現HTML5中placeholder特效：
：
實現代碼：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+request.getContextPath()+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head> <title>藉助jquery placeholder實現HTML5中placeholder特效</title> <script type="text/javascript" src="<%=basePath%>js/jquery-1.8.3.min.js"></script> <script type="text/javascript" src="<%=basePath%>js/jquery.placeholder.js"></script><script type="text/javascript">$(function() {$('input, textarea').placeholder();});</script><style type="text/css">input, textarea { font-family: Helvetica, Arial; color: #000;}.placeholder {color: #aaa;}</style></head> <body><center style="margin-top: 10%"><font style="font-size: 18pt; font-weight: bold;font-weight: bold; color: red;">藉助jquery placeholder實現HTML5中placeholder特效</font></center><br><br> <input type="text" id="userName" name="userName" placeholder="請輸入username…" style="margin-bottom: 12px;"><br> <input type="password" id="password" name="password" placeholder="請輸入密碼…" style="margin-bottom: 12px;"><br> <textarea id="personalInformation" name="personalInformation" rows="3" cols="50" maxlength="200" placeholder="請輸入個人資訊…"></textarea></body></html>
說明：上面範例並非HTML5頁面，但因為使用了該外掛程式所以看上去和HTML5的效果差點兒相同；上面範例使用了jquery-1.8.3.min.js和jquery.placeholder.js兩個檔案，這兩個檔案可在以下的下載資源中找到。
【0分下載資源】
Jquery外掛程式placeholder的用法
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