Home > Web Front-end > JS Tutorial > body text

JavaScript method to achieve layer expansion effect after mouse click_javascript skills

WBOY
Release: 2016-05-16 15:59:23
Original
1079 people have browsed it

The example in this article describes how to use JavaScript to achieve the layer expansion effect after a mouse click. Share it with everyone for your reference. The specific analysis is as follows:

This JavaScript code can realize the function of expanding the layer after a mouse click. The code is a bit complicated and focuses on learning and research. If you are interested, you can modify and simplify it.

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>层展开折叠</title>
</head>
<body>
<style type="text/css">
DIV.clTopMenu{
 position:absolute;
 width:101;
 height:150;
 clip:rect(0,101,14,0);
 visibility:hidden;
 z-index:31;
 layer-background-color:#EEEEEE;
 background-color:#00CCFF
}
DIV.clTopMenuBottom{
 position:absolute;
 width:101;
 height:3;
 clip:rect(0,101,3,0);
 top:11;
 layer-background-color:#CECFCE;
 background-color:#000099;
 z-index:2
}
DIV.clTopMenuText{
 position:absolute;
 width:91;
 left:5;
 top:15;
 font-family:"Arial", "Helvetica", "sans-serif";
 font-size:9pt;
 background-color:#EEEEEE;
 z-index:1;
 color: #000000
} 
a:link {
 color: #000000;
 text-decoration: none
}
</style>
<script language="JavaScript" type="text/javascript">
function lib_bwcheck(){ //Browsercheck (needed)
 this.ver=navigator.appVersion
 this.agent=navigator.userAgent
 this.dom=document.getElementById&#63;1:0
 this.opera5=this.agent.indexOf("Opera 5")>-1
 this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)&#63;1:0; 
 this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)&#63;1:0;
 this.ie4=(document.all && !this.dom && !this.opera5)&#63;1:0;
 this.ie=this.ie4||this.ie5||this.ie6
 this.mac=this.agent.indexOf("Mac")>-1
 this.ns6=(this.dom && parseInt(this.ver) >= 5) &#63;1:0; 
 this.ns4=(document.layers && !this.dom)&#63;1:0;
 this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5)
 return this
}
var bw=new lib_bwcheck()
nPlace=0
var nNumberOfMenus=2
var nMwidth=101
var nPxbetween=20
var nFromleft=10 
var nFromtop=20
var nBgcolor='#CECFCE' 
var nBgcolorchangeto='#6380BC' 
var nImageheight=11 
function makeNewsMenu(obj,nest){
 nest=(!nest) &#63; "":'document.'+nest+'.'     
   this.css=bw.dom&#63; document.getElementById(obj).style:bw.ie4&#63;document.all[obj].style:bw.ns4&#63;eval(nest+"document.layers." +obj):0;  
 this.evnt=bw.dom&#63; document.getElementById(obj):bw.ie4&#63;document.all[obj]:bw.ns4&#63;eval(nest+"document.layers." +obj):0;   
 this.scrollHeight=bw.ns4&#63;this.css.document.height:this.evnt.offsetHeight
 this.moveIt=b_moveIt;this.bgChange=b_bgChange;
 this.slideUp=b_slideUp; this.slideDown=b_slideDown;
 this.clipTo=b_clipTo;
  this.obj = obj + "Object";  eval(this.obj + "=this")  
}
function b_moveIt(x,y){this.x=x; this.y=y; this.css.left=this.x; this.css.top=this.y}
function b_bgChange(color){if(bw.dom || bw.ie4) this.css.backgroundColor=color; else this.css.bgColor=color}
function b_clipTo(t,r,b,l){
 if(bw.ns4){this.css.clip.top=t; this.css.clip.right=r; this.css.clip.bottom=b; this.css.clip.left=l
 }else this.css.clip="rect("+t+","+r+","+b+","+l+")";
}
function b_slideUp(ystop,moveby,speed,fn,wh){
 if(!this.slideactive){
  if(this.y>ystop){
   this.moveIt(this.x,this.y-5); eval(wh)
   setTimeout(this.obj+".slideUp("+ystop+","+moveby+","+speed+",'"+fn+"','"+wh+"')",speed)
  }else{
   this.slideactive=false; this.moveIt(0,ystop); eval(fn)
  }
 }
}
function b_slideDown(ystop,moveby,speed,fn,wh){
 if(!this.slideactive){
  if(this.y<ystop){
   this.moveIt(this.x,this.y+5); eval(wh)
   setTimeout(this.obj+".slideDown("+ystop+","+moveby+","+speed+",'"+fn+"','"+wh+"')",speed)
  }else{
   this.slideactive=false; this.moveIt(0,ystop); eval(fn)
  }
 }
}
function newsMenuInit(){
 oTopMenu=new Array()
 zindex=10
 for(i=0;i<=nNumberOfMenus;i++){
  oTopMenu[i]=new Array()
  oTopMenu[i][0]=new makeNewsMenu('divTopMenu'+i)
  oTopMenu[i][1]=new makeNewsMenu('divTopMenuBottom'+i,'divTopMenu'+i)
  oTopMenu[i][2]=new makeNewsMenu('divTopMenuText'+i,'divTopMenu'+i)
  oTopMenu[i][1].moveIt(0,nImageheight)
  oTopMenu[i][0].clipTo(0,nMwidth,nImageheight+3,0)
  if(!nPlace) oTopMenu[i][0].moveIt(i*nMwidth+nFromleft+(i*nPxbetween),nFromtop)
  else{
   oTopMenu[i][0].moveIt(nFromleft,i*nImageheight+nFromtop+(i*nPxbetween))
   oTopMenu[i][0].css.zIndex=zindex--
  }
  oTopMenu[i][0].css.visibility="visible"
 }
}
function topMenu(num){
 if(oTopMenu[num][1].y==nImageheight) oTopMenu[num][1].slideDown(oTopMenu[num][2].scrollHeight+20,10,40,'oTopMenu['+num+'][0].clipTo(0,nMwidth,oTopMenu['+num+'][1].y+3,0)','oTopMenu['+num+'][0].clipTo(0,nMwidth,oTopMenu['+num+'][1].y+3,0)')
 else if(oTopMenu[num][1].y==oTopMenu[num][2].scrollHeight+20) oTopMenu[num][1].slideUp(nImageheight,10,40,'oTopMenu['+num+'][0].clipTo(0,nMwidth,oTopMenu['+num+'][1].y+3,0)','oTopMenu['+num+'][0].clipTo(0,nMwidth,oTopMenu['+num+'][1].y+3,0)')
}
function menuOver(num){oTopMenu[num][1].bgChange(nBgcolorchangeto)}
function menuOut(num){oTopMenu[num][1].bgChange(nBgcolor)}
onload=newsMenuInit;
</script>
<div id="divTopMenu0" class="clTopMenu" align="center" style="height: 170; left: 20; top: 20"><span class="css3"><a href="#" onMouseOver="menuOver(0)" onMouseOut="menuOut(0)" onClick="topMenu(0); if(bw.dom || bw.ie4)this.blur(); return false">点击展开</a>
 </span> 
 <div id="divTopMenuText0" class="clTopMenuText">
 <span class="css3">
 鼠标点击后层展开JavaScript鼠标点击后层展开JavaScript。
 </span>
 </div>
 <div id="divTopMenuBottom0" class="clTopMenuBottom" style="top: 11; height: 10"></div>
</div>
</div>
</body>
</html>
Copy after login

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

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template