本文实例讲述了js实现鼠标点击左上角滑动菜单效果代码。分享给大家供大家参考。具体如下：
这里需要鼠标点击激活的网页左上角菜单，不点击不会滑出来，可以改造成二级菜单。
运行效果截图如下：
在线演示地址如下：
http://demo.jb51.net/js/2015/js-click-hd-show-menu-style-codes/
具体代码如下：
<!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">
#divMenu0 {position:absolute; top:0px; left:30px; visibility:hidden; font-family:arial,helvetica,sans-serif; font-size:18px; font-weight:bold;}
#divMenu1 {position:absolute; top:0px; left:150px; visibility:hidden; font-family:arial,helvetica,sans-serif; font-size:18px; font-weight:bold;}
#divMenu2 {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"Opera 5")>-1
this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)"MSIE 6")>-1 && this.dom && !this.opera5)"Mac")>-1
this.ns6=(this.dom && parseInt(this.ver) >= 5) "":'document.'+nest+'.'
this.el=bw.dom"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"",tShow,tMove,tSpeed)
oMenu[1]=new makeMenu('divMenu1',"",tShow,tMove,tSpeed) //*
oMenu[2]=new makeMenu('divMenu2',"",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='visible'
}
if(tMoveOnScroll) bw.ns4||bw.ns6"divMenu0">
<!-- 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>
</div>
<div id="divMenu1">
<!-- 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>
</div>
<div id="divMenu2">
<!-- 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>
</div>
</body>
</html>
希望本文所述对大家的JavaScript程序设计有所帮助。
标签：
js,鼠标点击,滑动菜单
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