本文實例講述了jQuery實現返回頂部效果的方法。分享給大家供大家參考。具體實現方法如下：
1、首先是CSS樣式：
/*updown*/ #shangxia{position:fixed;top:83%;right:42%;margin-right:-543px;display:block;_display:none} #shang,#comt,#xia{background:url(../images/sprite.png) no-repeat;position:relative;cursor:pointer;height:25px;width:29px;margin:10px 0 0} #shang{background-position:0 -308px}#comt{background-position:0 -338px;height:32px} #xia{background-position:0 -376px} #comt:hover{background-position:-31px -338px}#shang:hover{background-position:-31px -308px} #xia:hover{background-position:-31px -376px} 2、接著是jquery代碼：（要引入jQuery核心庫）
3、引用頁面：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> <style type="text/css"> /*updown*/ #shangxia{position:fixed;top:60%;right:50%;margin-right:-543px;display:block;_display:none} #shang,#comt,#xia{background:url(images/sprite.png) no-repeat;position:relative;cursor:pointer;height:25px;width:29px;margin:10px 0 0} #shang{background-position:0 -308px}#comt{background-position:0 -338px;height:32px}#xia{background-position:0 -376px} #comt:hover{background-position:-31px -338px}#shang:hover{background-position:-31px -308px}#xia:hover{background-position:-31px -376px} /*存檔*/ </style> ///上面的是內部樣式，上面已經有外部樣式，如果不使用內部樣式可以引入外部樣式 <script type="text/javascript" src="http://code.jquery.com/jquery-1.10.1.min.js"></script> <script type="text/javascript" src="http://code.jquery.com/jquery-migrate-1.2.1.min.js"></script> <script type="text/javascript" src="js/updown/devework.js"></script> </head> <body> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <p>333</p> <div id="shangxia"> <div id="shang" title="↑ 返回頂部"></div> <div id="comt" title="沙發還沒有被搶哦"></div> <div id="xia" title="↓ 移至底部"></div> </div> </body> </html>希望本文所述對大家的jQuery程序設計有所幫助。
新聞熱點
疑難解答
