发布于 2016-11-23 21:38:22 | 148 次阅读 | 评论: 0 | 来源: 网友投递

这里有新鲜出炉的Javascript教程,程序狗速度看过来!

JavaScript客户端脚本语言

Javascript 是一种由Netscape的LiveScript发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言,主要目的是为了解决服务器端语言,比如Perl,遗留的速度问题,为客户提供更流畅的浏览效果。


这篇文章主要介绍了JavaScript实现鼠标点击后层展开效果的方法,可实现点击文字缓慢展开层的效果,具有一定参考借鉴价值,需要的朋友可以参考下

本文实例讲述了JavaScript实现鼠标点击后层展开效果的方法。分享给大家供大家参考。具体分析如下:

这段JavaScript代码可实现鼠标点击后层展开的功能,代码稍嫌复杂,重在学习研究,有兴趣的可以修改简化一下。


<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?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()
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) ? "":'document.'+nest+'.'     
   this.css=bw.dom? document.getElementById(obj).style:bw.ie4?document.all[obj].style:bw.ns4?eval(nest+"document.layers." +obj):0;  
 this.evnt=bw.dom? document.getElementById(obj):bw.ie4?document.all[obj]:bw.ns4?eval(nest+"document.layers." +obj):0;   
 this.scrollHeight=bw.ns4?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>

希望本文所述对大家的javascript程序设计有所帮助。



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