Left vertical sliding menu effect code implemented by JS

Left vertical sliding menu effect code implemented by JS_javascript skills

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Release： 2016-05-16 15:36:14

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The example in this article describes the left vertical sliding menu effect code implemented by JS. Share it with everyone for your reference, the details are as follows:

This is a modified left vertical sliding menu, based on JavaScript CSS, without too many modifications. It mainly wants to achieve the animation effect of the menu. Friends who want to use it, beautify it yourself.

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/js/2015/js-left-scroll-style-menu-demo/

The specific code is as follows:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN">
<html xmlns="http://www.w3.org/1999/xhtml">
<title>经过改造的左侧竖向滑动菜单</title>
<style type="text/css">
body{
 margin:10px;
 padding:10px;
}
a:link { text-decoration: none;color: blue} 
a:active { text-decoration:blink} 
a:hover { text-decoration:underline;color: red} 
a:visited { text-decoration: none;color: green} 
body,td,div,span,li{
 font-size:12px;
}
.title01,.title02{
 color:#00b;
 font-weight:bold;
}
#DoorP{
 width:200px;
 height:300px;
 padding:0px;
 background:#FFFCF2;
}
.title01{
 width:100%;
 height:25px;
 background:#FFFCF2;
 cursor:pointer;
}
.title02{
 width:100%;
 height:25px;
 background:#FFFCF2;
 cursor:pointer;
}
.content{
 background:#FFFCF2;
 border-bottom:2px solid #fff;
 overflow:hidden;
 color:#666;
 padding-left:4px;
 padding-right:4px;
 line-height:18px;
}
.curved { 
 width:202px; 
 } 
.curved .b1, .curved .b2, .curved .b3, .curved .b4 { 
 font-size:1px; 
 display:block; 
 background:#FFFCF2; 
overflow: hidden; 
} 
.curved .b1, .curved .b2, .curved .b3 { 
 height:1px; 
 } 
.curved .b2, .curved .b3, .curved .b4 { 
 background:#FFFCF2; 
 border-left:1px solid #C7BC98; 
 border-right:1px solid #C7BC98; 
 } 
.curved .b1 { 
 margin:0 4px; 
 background:#C7BC98; 
 } 
.curved .b2 { 
 margin:0 2px; 
 border-width:0 2px; 
 } 
.curved .b3 { 
 margin:0 1px; 
 } 
.curved .b4 { 
 height:2px; 
 margin:0; 
 } 
.curved .c1 { 
 margin:0 5px; 
 background:#C7BC98; 
 } 
.curved .c2 { 
 margin:0 3px; 
 border-width:0 2px; 
 } 
.curved .c3 { 
 margin:0 2px; 
 } 
.curved .c4 { 
 height:2px; 
 margin: 0 1px; 
 } 
.curved .boxcontent { 
 display:block; 
 background:transparent; 
 border-left:1px solid #C7BC98; 
 border-right:1px solid #C7BC98; 
 font-size:0.9em; 
 text-align:justify; 
 } 
</style>
<div class="curved"> 
 <b class="b1 c1"></b> 
 <b class="b2 c2"></b> 
 <b class="b3 c3"></b> 
 <b class="b4 c4"></b> 
 <div class="boxcontent"> 
<div id="DoorP">
 <table>
 <tr>
  <td align="center">
   第一层信息
  </td>
 </tr>
 </table>
 <div class="content" align="center">
 <a href="#">二层</a><br/>
 二层<br/>
 二层<br/>
 </div>
  <b class="b1"></b> 
  <b class="b2"></b> 
  <b class="b3"></b> 
  <b class="b4"></b> 
 <table>
 <tr>
  <td align="center">
  第二层信息
  </td>
 </tr>
 </table>
<div class="content" align="center">
 <a href="#">二层</a><br/>
 二层<br/>
 二层<br/>
 </div>
  <b class="b1"></b> 
  <b class="b2"></b> 
  <b class="b3"></b> 
  <b class="b4"></b> 
 <table>
 <tr>
  <td align="center">
  第三层信息
  </td>
 </tr>
 </table>
<div class="content" align="center">
 <a href="#">二层</a><br/>
 二层<br/>
 二层<br/>
 </div>
</div></div> 
 <b class="b4 c4"></b> 
 <b class="b3 c3"></b> 
 <b class="b2 c2"></b> 
 <b class="b1 c1"></b> 
<script type="text/javascript">
 var open = 2;
 var openState = new Array();
 var closeState = new Array();
 var dH = 220;
 function $(id){
 if(document.getElementById(id))
 {
  return document.getElementById(id);
 }
 else
 {
  alert("没有找到!");
 }
 }
 function $tag(id,tagName){
 return $(id).getElementsByTagName(tagName)
 }
 function closeMe(Cid,Oid){  
 var h = parseInt(Ds[Cid].style.height);
 //alert(h);
 if(h > 2)
 {
  h = h - Math.ceil(h/3);  
  Ds[Cid].style.height = h+"px";
 }
 else
 { 
  openMe(Oid);
  clearTimeout(closeState[Cid]);
  return false;
 }
 closeState[Cid] = setTimeout("closeMe("+Cid+","+Oid+")");
 }
 function openMe(Oid){
 var h = parseInt(Ds[Oid].style.height); 
 //alert(h);
 if(h < dH)
 {
  h = h + Math.ceil((dH-h)/3);  
  Ds[Oid].style.height = h+"px";
 }
 else
 { 
  clearTimeout(openState[Oid]);  
  return false;
 }
 openState[Oid] = setTimeout("openMe("+Oid+")");
 }
 var Ds = $tag("DoorP","div");
 var Ts = $tag("DoorP","table");
 if(Ds.length != Ts.length)
 {
 alert("标题和内容数目不相同!");
 }
 for(var i = 0 ; i < Ds.length ; i++)
 { 
 if(i==open)
 {
  Ds[i].style.height = dH+"px";
  Ts[i].className="title01";
 }
 else
 {
  Ds[i].style.height = "0px";
  Ts[i].className="title02";
 }
 Ts[i].value = i;
 Ts[i].onclick = function(){
  if(open==this.value)
  {
  return false;
  }
  Ts[open].className="title02";
  Ts[this.value].className="title01";
  for(var i = 0 ; i < openState.length ; i++)
  {
  clearTimeout(openState[i]);
  clearTimeout(closeState[i]);
  }
  closeMe(open,this.value);
  //openMe(this.value);
  open = this.value;
 }
 } 
 function showDiv(id){ 
 Ds[id].style.height=dH+"px";
 Ds[open].style.height="0px";
 open = id;
 }
</script>

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I hope this article will be helpful to everyone in JavaScript programming.