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JS implements navigation menu code with arc background gradient effect_javascript skills

WBOY
WBOYOriginal
2016-05-16 15:36:461373browse

The example in this article describes the JS implementation of navigation menu code with arc background gradient effect. Share it with everyone for your reference. The details are as follows:

This is a JS CSS navigation menu with personalized effects. An interesting arc-shaped background appears when the mouse passes over it. In fact, CSS is used to call the background, JavaScript is used to control the movement of the background, and jQuery has been used to achieve similar functions. The overall feeling is very good.

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/js/2015/js-css-cicle-cha-nav-menu-demo/

The specific code is 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>
<title>圆弧背景的导航菜单</title>
<meta http-equiv="content-type" content="text/html;charset=gb2312">
<style type="text/css">
*{margin:0px;padding:0px;font-size:12px;}
.div_menu{ position:absolute;left:100px;top:100px;}
.ul_menu{list-style:none;}
.ul_menu li{float:left;margin-left:1px;border:1px solid #33CCCC;display:block;padding:5px 3px;background:url(images/menu_bg.gif) repeat-x 0px -80px;padding:2px 12px;}
.ul_menu li a{height:40px;width:auto;color:#ffffff;font-size:20px;font-weight:600;text-decoration:none;}
</style>
<script type="text/javascript">
var isIE = (document.all)&#63;true:false;
var $ID = function(id){
 return "string"==typeof id&#63;document.getElementById(id):id;
}
var Class = {
 create:function(){
  return function(){
   this.initilize.apply(this,arguments);
  }
 }
}
var Extend = function(destination, source){
 for(var property in source){
  destination[property] = source[property];
 }
}
var Bind = function(object,fun){
 var args = Array.prototype.slice.call(arguments).slice(2);
 return function(){
  return fun.apply(object,args);
 }
}
var BindAsEventListener = function(object,fun){
 var args = Array.prototype.slice.call(arguments).slice(2);
 return function(event){
  return fun.apply(object,[event||window.event].concat(args));
 }
}
function addEventHandler(oTarget, sEventType, fnHandler) {
 if (oTarget.addEventListener) {
  oTarget.addEventListener(sEventType, fnHandler, false);
 } else if (oTarget.attachEvent) {
  oTarget.attachEvent("on" + sEventType, fnHandler);
 } else {
  oTarget["on" + sEventType] = fnHandler;
 }
};
function removeEventHandler(oTarget, sEventType, fnHandler) {
 if (oTarget.removeEventListener) {
 oTarget.removeEventListener(sEventType, fnHandler, false);
 } else if (oTarget.detachEvent) {
 oTarget.detachEvent("on" + sEventType, fnHandler);
 } else { 
 oTarget["on" + sEventType] = null;
 }
};
</script>
<script type="text/javascript">
var MyMenu = Class.create();
MyMenu.prototype = {
 initilize:function(ul){
  this.lis = ul.getElementsByTagName("li");
  for(var i=0;i<this.lis.length;i++){
   new BgChange(this.lis[i]);
  }
 }
}
var BgChange = Class.create();
BgChange.prototype = {
 initilize:function(li){
  this.li = li;
  this._fnMouseOver = Bind(this,this.MouseOver);
  this._fnMouseOut = Bind(this,this.MouseOut);
  addEventHandler(this.li,"mouseover",this._fnMouseOver);
  addEventHandler(this.li,"mouseout",this._fnMouseOut);
  this.timer = null;
  this.i = -80;
 },
 MouseOver:function(){
  this.Stop();
  this.i+=2;
  if(this.i>=0){
   window.clearTimeout(this.timer);
   this.i = 0;
  }else{
   this.ShowBg();
   this.timer = window.setTimeout(this._fnMouseOver,10);
  }
 },
 MouseOut:function(){
  this.Stop();
  this.i-=2;
  if(this.i<=-80){
   window.clearTimeout(this.timer);
   this.i = -80;
  }else{
   this.ShowBg();
   this.timer = window.setTimeout(this._fnMouseOut,10);
  }
 },
 ShowBg:function(){
  this.li.style.backgroundPosition = "0px " + this.i + "px";
 },
 Stop:function(){
  if(this.timer){
   window.clearTimeout(this.timer);
  }
 }
}
onload = function(){
 new MyMenu($ID("ul_menu"));
}
</script>
</head>
<body>
<div class="div_menu">
 <ul class="ul_menu" id="ul_menu">
 <li><a href="#">欢迎光临</a></li>
 <li><a href="#">最新更新</a></li>
 <li><a href="#">下载排行</a></li>
 <li><a href="#">网页特效</a></li>
 <li><a href="#">广告联系</a></li>
 </ul>
</div>
</body>
</html>

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

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