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js implements the mouse click sliding menu effect code in the upper left corner

PHPzforward: 2016-05-16 15:40:271213browse

This article mainly introduces the js code to implement the sliding menu effect in the upper left corner of the mouse. It involves the techniques of JavaScript to dynamically transform page element styles based on mouse events. It has certain reference value. Friends who need it can refer to it. The details are as follows:

Here you need to click the mouse to activate the menu in the upper left corner of the web page. It will not slide out if you don’t click it. It can be transformed into a secondary menu.

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/ js/2015/js-click-hd-show-menu-style-codes/

The specific codes are 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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>左上角导航菜单</title>
 <style type="text/css">
#pMenu0 {position:absolute; top:0px; left:30px; visibility:hidden; font-family:arial,helvetica,sans-serif; font-size:18px; font-weight:bold;}
#pMenu1 {position:absolute; top:0px; left:150px; visibility:hidden; font-family:arial,helvetica,sans-serif; font-size:18px; font-weight:bold;}
#pMenu2 {position:absolute; top:0px; left:250px; visibility:hidden; font-family:arial,helvetica,sans-serif; font-size:18px; font-weight:bold;} 
</style>
<script language="javascript">
function lib_bwcheck(){ //Browsercheck (needed)
 this.ver=navigator.appVersion
 this.agent=navigator.userAgent
 this.dom=document.getElementById?1:0
 this.opera5=this.agent.indexOf("Opera 5")>-1
 this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0; 
 this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
 this.ie4=(document.all && !this.dom && !this.opera5)?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) ?1:0; 
 this.ns4=(document.layers && !this.dom)?1:0;
 this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5)
 return this
}
var bw=new lib_bwcheck()
var tMove=10;
var tSpeed=40
var tMoveOnScroll=true
var tShow=20
function makeMenu(obj,nest,show,move,speed){
 nest=(!nest) ? "":&#39;document.&#39;+nest+&#39;.&#39;
 this.el=bw.dom?document.getElementById(obj):bw.ie4?document.all[obj]:bw.ns4?eval(nest+&#39;document.&#39;+obj):0;
  this.css=bw.dom?document.getElementById(obj).style:bw.ie4?document.all[obj].style:bw.ns4?eval(nest+&#39;document.&#39;+obj):0;  
 this.x=this.css.left||this.css.pixelLeft||this.el.offsetLeft||0
 this.y=this.css.top||this.css.pixelTop||this.el.offsetTop||0
 this.state=1; this.go=0; this.mup=b_mup; this.show=show; this.mdown=b_mdown; 
 this.height=bw.ns4?this.css.document.height:this.el.offsetHeight
 this.moveIt=b_moveIt; this.move=move; this.speed=speed
 this.obj = obj + "Object";  eval(this.obj + "=this") 
}
var px = bw.ns4||window.opera?"":"px";
function b_moveIt(x,y){this.x=x; this.y=y; this.css.left=this.x+px; this.css.top=this.y+px;}
function b_mup(){
 if(this.y>-this.height+this.show){
  this.go=1; this.moveIt(this.x,this.y-this.move)
  setTimeout(this.obj+".mup()",this.speed)
 }else{this.go=0; this.state=1} 
}
//Menu out
function b_mdown(){
 if(this.y<eval(scrolled)){
  this.go=1; this.moveIt(this.x,this.y+this.move)
  setTimeout(this.obj+".mdown()",this.speed)
 }else{this.go=0; this.state=0} 
}
function moveTopMenu(num){
 if(!oMenu[num].go){
  if(!oMenu[num].state)oMenu[num].mup() 
  else oMenu[num].mdown()
 }
 for(i=0;i<oMenu.length;i++){
  if(i!=num && !oMenu[i].state){ oMenu[i].mup()}
 }
}
function checkScrolled(){
 for(i=0;i<oMenu.length;i++){
  if(!oMenu[i].go){
   y=!oMenu[i].state?eval(scrolled):eval(scrolled)-oMenu[i].height+oMenu[i].show
   oMenu[i].moveIt(oMenu[i].x,y)
  }
 }
 if(bw.ns4||bw.ns6) setTimeout(&#39;checkScrolled()&#39;,40)
}
function topMenuInit(){
 oMenu=new Array()
 oMenu[0]=new makeMenu(&#39;pMenu0&#39;,"",tShow,tMove,tSpeed) 
 oMenu[1]=new makeMenu(&#39;pMenu1&#39;,"",tShow,tMove,tSpeed) //*
 oMenu[2]=new makeMenu(&#39;pMenu2&#39;,"",20,10,20) //*
 scrolled=bw.ns4||bw.ns6?"window.pageYOffset":"document.body.scrollTop"
 for(i=0;i<oMenu.length;i++){
  oMenu[i].moveIt(oMenu[i].x,-oMenu[i].height+oMenu[i].show)
  oMenu[i].css.visibility=&#39;visible&#39;
 }
 if(tMoveOnScroll) bw.ns4||bw.ns6?checkScrolled():window.onscroll=checkScrolled;
}
onload=topMenuInit;
</script>
<p id="pMenu0">
 <!-- You can just replace this text with some cool images if you want -->
 <a href="javascript://">链接一</a><br><br>
 <a href="javascript://">链接二</a><br><br>
 <a href="javascript://">链接三</a><br><br>
 <a href="javascript://">链接四</a><br><br>
 <a href="#" onclick="moveTopMenu(0); return false">菜单一</a>
</p>
<p id="pMenu1">
 <!-- You can just replace this text with some cool images if you want -->
 这是第二个菜单的内容<br><br>
 <a href="#" onmouseover="moveTopMenu(1)">菜单二</a>
</p>
<p id="pMenu2">
 <!-- You can just replace this text with some cool images if you want -->
 这是第三个菜单的内容<br>
 <a href="#" onclick="moveTopMenu(2); return false">菜单三</a>
</p>
</body>
</html>

The above is the entire content of this chapter, more related For tutorials, please visit JavaScript Video Tutorial!

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