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JS realizes the nationwide city switching navigation effect that slides down from the top of the web page_javascript skills

WBOY
WBOYOriginal
2016-05-16 15:43:361628browse

The example in this article describes the JS implementation of the nationwide city switching navigation effect that slides down from the top of the web page. Share it with everyone for your reference. The details are as follows:

This is a JS version of the city switching navigation that slides down from the top of the web page. It is imitating the city navigation switching at the top of the sohu group purchase web page. It slides down from the top to facilitate switching between other cities. It is implemented using a JS encapsulation plug-in from the original version of sohu.com. It is currently just for demonstration, so cities across the country are not available. Users can add their own.

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/js/2015/js-web-scroll-city-cha-style-codes/

The specific code is as follows: 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>网页顶部向下滑出的切换城市导航</title>
<style>
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,form,img,dl,dt,dd,table,th,td,blockquote,fieldset,div,strong,label,em{margin:0;padding:0;border:0;}
ul,ol,li{list-style:none;}
input,button{margin:0;font-size:12px;vertical-align:middle;}
body{font-size:12px;font-family:Arial, Helvetica, sans-serif; text-align:center; margin:0 auto;}
table{border-collapse:collapse;border-spacing:0;}
p{line-height:24px}
.clearfloat{height:0;font-size:1px;clear:both;line-height:0;}
#container{ width:960px; text-align:left; margin:0 auto; }
a{color:#333;text-decoration:none;}
a:hover{color:#ef9b11; text-decoration:underline;}
.header{ background:url(images/tuan_head_01.gif) repeat-x; height:32px;}
.header .topCtiy {PADDING-RIGHT: 10px; PADDING-TOP: 4px; HEIGHT: 22px}
.header .topCtiy UL {FLOAT: right}
.header .topCtiy LI {PADDING-RIGHT: 10px; DISPLAY: inline; PADDING-LEFT: 10px; FLOAT: left; PADDING-BOTTOM: 0px; MARGIN-LEFT: 3px; COLOR: #fff; LINE-HEIGHT: 22px; PADDING-TOP: 0px}
.header .topCtiy LI.i1 {PADDING-RIGHT: 13px; PADDING-LEFT: 13px; FONT-WEIGHT: bold; FONT-SIZE: 14px; BACKGROUND: #e16e6e; PADDING-BOTTOM: 0px; PADDING-TOP: 0px}
.header .topCtiy LI.i2 {BACKGROUND: url(images/tuan_icon10.gif) no-repeat 100% 50%; CURSOR: pointer}
.header .topCtiy LI A {COLOR: #fff}
.header .topCtiy LI A:hover {COLOR: #fff}
.selCity {PADDING-RIGHT: 0px; PADDING-LEFT: 0px; Z-INDEX: 10; BACKGROUND: url(images/tuan_bgx06.gif) #7e2725 repeat-x 50% bottom; PADDING-BOTTOM: 4px; WIDTH: 100%; PADDING-TOP: 2px; POSITION: relative;}
.selCity .none {LEFT: 47.5%; BOTTOM: -18px; POSITION: absolute}
.selCity .none A {DISPLAY: block; BACKGROUND: url(images/tuan_bg15.gif) no-repeat; WIDTH: 68px; TEXT-INDENT: -3000px; HEIGHT: 21px; TEXT-DECORATION: none}
.selCity .none A:hover {DISPLAY: block; BACKGROUND: url(images/tuan_bg15.gif) no-repeat; WIDTH: 68px; TEXT-INDENT: -3000px; HEIGHT: 21px; TEXT-DECORATION: none}
.selCity TABLE {MARGIN: 0px auto; WIDTH: 950px; BORDER-COLLAPSE: collapse}
.selCity TABLE TD {BORDER-RIGHT: #8b3d3b 1px dashed; BORDER-TOP: #8b3d3b 1px dashed; FONT-SIZE: 14px; VERTICAL-ALIGN: middle; BORDER-LEFT: #8b3d3b 1px dashed; WIDTH: 157px; COLOR: #fff; BORDER-BOTTOM: #8b3d3b 1px dashed; HEIGHT: 39px; TEXT-ALIGN: center}
.selCity TABLE TD A {DISPLAY: block; COLOR: #fff; LINE-HEIGHT: 40px; HEIGHT: 40px; TEXT-DECORATION: none}
.selCity TABLE TD A:hover {BACKGROUND: #a86e6d; COLOR: #fff; TEXT-DECORATION: none}
.selCity TABLE TD A.cur {BACKGROUND: #a86e6d}
.header .box {MARGIN-TOP: 36px; TEXT-ALIGN: left}
.header .lab_city {MARGIN-TOP: 1px; FLOAT: left; WIDTH: 210px; COLOR: #fff; POSITION: relative; HEIGHT: 25px}
.header .sel_fl {PADDING-RIGHT: 10px; PADDING-LEFT: 10px; BACKGROUND: #400a09; LEFT: -97px; PADDING-BOTTOM: 27px; WIDTH: 361px; PADDING-TOP: 23px; POSITION: absolute; TOP: 28px}
.header .sel_fl TABLE {BORDER-COLLAPSE: collapse}
.header .sel_fl TABLE TD {
BORDER-RIGHT: #8b3d3b 1px dashed; BORDER-TOP: #8b3d3b 1px dashed; FONT-SIZE: 14px; VERTICAL-ALIGN: middle; BORDER-LEFT: #8b3d3b 1px dashed; WIDTH: 88px; COLOR: #fff; BORDER-BOTTOM: #8b3d3b 1px dashed; HEIGHT: 34px; TEXT-ALIGN: center}
.header .sel_fl TABLE TD.first {BORDER-LEFT-WIDTH: 0px}
.header .sel_fl TABLE TD.last {BORDER-RIGHT-WIDTH: 0px}
.header .sel_fl TABLE TD A {DISPLAY: block; LINE-HEIGHT: 34px; HEIGHT: 34px; TEXT-DECORATION: none}
.header .sel_fl TABLE TD A:hover {DISPLAY: block; LINE-HEIGHT: 34px; HEIGHT: 34px; TEXT-DECORATION: none}
.header .sel_fl TABLE TD A:hover {BACKGROUND: #5c2f2e}
.header .sel_fl TABLE TD A.cur {BACKGROUND: #5c2f2e}
.header .lab_city .city {FONT-WEIGHT: bold; FONT-SIZE: 14px; BACKGROUND: url(images/tuan_bg01.gif) no-repeat 100% 0px; FLOAT: left; WIDTH: 70px; LINE-HEIGHT: 25px; MARGIN-RIGHT: 16px; TEXT-ALIGN: center}
.header .lab_city .txt {DISPLAY: inline-block; CURSOR: pointer; PADDING-TOP: 8px}
</style>
</head>
<BODY>
<DIV class=selCity id=allCity style="DISPLAY: none">
<DIV class=area>
<TABLE>
 <TBODY>
 <TR>
 <TD><A class=cur href="#">北京</A></TD>
 <TD><A href="#">上海</A></TD>
 <TD><A href="#">广州</A></TD>
 <TD><A href="#">深圳</A></TD>
 <TD><A href="#">西安</A></TD></TR>
 <TR>
 <TD><A href="#">天津</A></TD>
 <TD><A href="#">南京</A></TD>
 <TD><A href="#">成都</A></TD>
 <TD><A href="#">杭州</A></TD>
 <TD><A href="#">济南</A></TD></TR>
 <TR>
 <TD><A href="#">哈尔滨</A></TD>
 <TD><A href="#">海南</A></TD>
 <TD><A href="#">沈阳</A></TD>
 <TD><A href="#">大连</A></TD>
 <TD><A href="#">石家庄</A></TD></TR>
 <TR>
 <TD><A href="#">长春</A></TD>
 <TD><A href="#">郑州</A></TD>
 <TD> </TD>
 <TD> </TD>
 <TD> </TD>
 <TD> </TD></TR></TBODY></TABLE>
<DIV class=none><A id=foldin href="javascript:;">收起</A></DIV></DIV></DIV>
<DIV class=header>
 <DIV class=area>
  <DIV class=r>
   <DIV class="topCtiy clear">
    <UL>
     <LI class=i1>北京 </LI>
     <LI class=i2 id=changeCity>切换城市 </LI>
    </UL>
   </DIV>
  </DIV>
 </DIV>
</DIV>
<SCRIPT src="js/sohu.js" type=text/javascript></SCRIPT>
<SCRIPT type=text/javascript>
jQuery(function(){
$("#changeCity").click(function(a){$("#allCity").slideDown(300);a.stopPropagation();$(this).blur()});$("#allCity").click(function(a){a.stopPropagation()});$(document).click(function(a){a.button!=2&&$("#allCity").slideUp(300)});$("#foldin").click(function(){$("#allCity").slideUp(300)})
});
</SCRIPT>
<br /><br />
<p></p>
</body>
</html>

I hope this article will be helpful to everyone’s JavaScript programming design.

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