本文實(shí)例講述了JS實(shí)現(xiàn)帶有3D立體感的銀灰色豎排折疊菜單代碼。分享給大家供大家參考，具體如下：
這是一款超酷的可以用到網(wǎng)頁左側(cè)的銀灰色豎排多級折疊菜單，可以自己為菜單加一個背景，CSS中預(yù)留有代碼，這是比較標(biāo)準(zhǔn)和經(jīng)典的一款后臺管理模式的菜單，Div+Css結(jié)構(gòu)，符合標(biāo)準(zhǔn)，修改方便，挺不錯。
運(yùn)行效果截圖如下：
在線演示地址如下：
http://demo.VeVB.COm/js/2015/js-3d-left-yhs-menu-demo/
具體代碼如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>網(wǎng)頁左邊的豎式菜單</title><style>body{background-color:#F3F3F3;margin:0px;font-size: 9pt;background-position:center;text-decoration: none;scrollbar-face-color: #f6f6f6;scrollbar-highlight-color: #ffffff; scrollbar-shadow-color: #EEEEEE; scrollbar-3dlight-color: #EEEEEE; scrollbar-arrow-color: #330000; scrollbar-track-color: #f6f6f6; scrollbar-darkshadow-color: #ffffff;}/* 網(wǎng)站鏈接總的css定義*/a{text-decoration: underline;}a:link {color: #595989;}a:visited {color: #595989;} a:hover{color: #ff0000;} a:active {color: #595989;} .dt1, .dt2, .dt3, .dt4 ,.dt{padding: 0px; margin: 0px; border: 0px; padding-left: 25px;border-left: 5px solid #c0c0c0; border-top: 1px solid #ffffff; border-bottom: 1px solid #c0c0c0;width: auto;text-align: left;line-height: 26px;height: 26px;background: #E0E0E0;cursor:pointer!important;cursor:hand;display:block;}/*這里可以加入背景圖片.dt1{ background-image: url(); background-repeat: no-repeat; background-position: right center;}.dt{ background-image: url(); background-repeat: no-repeat; background-position: 8px center;}.dt2{ background-image: url(); background-repeat: no-repeat; background-position: right center;}.dt4{ background-image: url(); background-repeat: no-repeat; background-position: right center;}.dt3{ background-image: ur(); background-repeat: no-repeat; background-position: right center;}*/#aboutbox { /*左側(cè)box*/padding: 0px; margin: 0px; border: 0px;width: 190px; float: left;background: #eee;}#aboutbox dl { /*dl、dt、dd*/margin: 0px; border: 0px;border: medium none; /*不顯示邊框*/background:#eeeeee;background-image: url();/*背景圖像，這里省略了*/background-repeat: repeat-y;background-position: left;clear: both;}#aboutbox dd {padding: 0px; margin: 0px; border: 0px;background: #eee;border-top: 1px solid #fff;border-left: 5px solid #e0e0e0;padding-right:3px;}#aboutbox ul { /*ul、li定義*/padding: 0px;margin: 0px; border: 0px;list-style-type: none; }#aboutbox li {padding: 0px; margin: 0px; border: 0px;text-align: left;text-indent: 10px;list-style:none;}#aboutbox li a {padding-left: 5px; margin: 0px; border: 0px;display: block;background: #eee;font-weight: normal;height: 22px;line-height: 22px;color: #000;border: 1px solid #eee;text-decoration: none;}#aboutbox li a:link,#aboutbox li a:visited {height: 22px;line-height: 22px;}#aboutbox li a:hover {padding-left: 5px;background-color: #e4e4e4;border: 1px solid #999999;color: #D90000;height: 22px;line-height: 22px;}#aboutbox li a:active {color: #333333;height: 22px;line-height: 22px;background: #EEEEEE;}.center_tdbgall /* 中部表格背景顏色 */{background:#ffffff;}</style></head><body><table class=center_tdbgall width="191" border="0" cellspacing="0" cellpadding="0"> <tr> <td width=191 rowspan="2" valign=top class=web_left_all> <div id=aboutbox> <dl> <dt class=dt1 id=dt1 onmouseover=showbg(1) onclick=showsubmenu(1) onmouseout=showoutbg(1)><B>網(wǎng)站動態(tài)</B> <dd id=submenu1> <ul> <LI><A href='#'>今日關(guān)注</A></LI> <LI><A href='#'>最新整理</A></LI> <LI><A href='#'>下載排行</A></LI> </ul> </dd> </dt> </dl> <dl> <dt class=dt2 id=dt2 onmouseover=showbg(2) onclick=showsubmenu(2) onmouseout=showoutbg(2)><B>管理新聞</B> <dd id=submenu2> <ul> <LI><A href='#'>新聞分類</A></LI> <LI><A href='#'>新聞列表</A></LI> <LI><A href='#'>審核新聞</A></LI> </ul> </dd> </dt> </dl><script>function showsubmenu(sid){ whichEl = eval('submenu' + sid); if (whichEl.style.display == 'none'){ eval("submenu" + sid + ".style.display='';"); eval("dt" + sid + ".className='dt2';"); } else{ eval("submenu" + sid + ".style.display='none';"); eval("dt" + sid + ".className='dt1';"); }}function showbg(sid){ whichEl = eval('submenu' + sid); if (whichEl.style.display == 'none'){ eval("dt" + sid + ".className='dt4';"); } else{ eval("dt" + sid + ".className='dt3';"); }}function showoutbg(sid){ whichEl = eval('submenu' + sid); if (whichEl.style.display == 'none'){ eval("dt" + sid + ".className='dt1';"); } else{ eval("dt" + sid + ".className='dt2';"); }}</script> </div></TD></tr></table></body></html>希望本文所述對大家JavaScript程序設(shè)計(jì)有所幫助。
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