web前端|js教程
JS,圆弧,背景渐变,导航菜单
web前端-js教程
本文实例讲述了JS实现带圆弧背景渐变效果的导航菜单代码。分享给大家供大家参考。具体如下：
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这是一款效果个性的JS+CSS导航菜单，鼠标经过时出现有趣弧形背景，实际上，这里用CSS调用了背景，用JavaScript控制了背景的移动，用jQuery实现过类似的功能，整体感觉很不错。
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运行效果截图如下：
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在线演示地址如下：
/js//js-css-cicle-cha-nav-menu-demo/
具体代码如下：
圆弧背景的导航菜单*{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.jpg) 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;}var isIE = (document.all)?true:false;var $ID = function(id){ return "string"==typeof id?document.getElementById(id):id;}var Class = { create:function(){ return function(){ this.initilize.apply(this,arguments); } }}var Extend = function(destination, source){ for(var property in source){ destination[property] = source[property]; }}var Bind = function(object,fun){ var args = Array.prototype.slice.call(arguments).slice(2); return function(){ return fun.apply(object,args); }}var BindAsEventListener = function(object,fun){ var args = Array.prototype.slice.call(arguments).slice(2); return function(event){ return fun.apply(object,[event||window.event].concat(args)); }}function addEventHandler(oTarget, sEventType, fnHandler) { if (oTarget.addEventListener) { oTarget.addEventListener(sEventType, fnHandler, false); } else if (oTarget.attachEvent) { oTarget.attachEvent("on" + sEventType, fnHandler); } else { oTarget["on" + sEventType] = fnHandler; }};function removeEventHandler(oTarget, sEventType, fnHandler) { if (oTarget.removeEventListener) { oTarget.removeEventListener(sEventType, fnHandler, false); } else if (oTarget.detachEvent) { oTarget.detachEvent("on" + sEventType, fnHandler); } else { oTarget["on" + sEventType] = null; }};var MyMenu = Class.create();MyMenu.prototype = { initilize:function(ul){ this.lis = ul.getElementsByTagName("li"); for(var i=0;i=0){ window.clearTimeout(this.timer); this.i = 0; }else{ this.ShowBg(); this.timer = window.setTimeout(this._fnMouseOver,10); } }, MouseOut:function(){ this.Stop(); this.i-=2; if(this.i<=-80){ window.clearTimeout(this.timer); this.i = -80; }else{ this.ShowBg(); this.timer = window.setTimeout(this._fnMouseOut,10); } }, ShowBg:function(){ this.li.style.backgroundPosition = "0px " + this.i + "px"; }, Stop:function(){ if(this.timer){ window.clearTimeout(this.timer); } }}onload = function(){ new MyMenu($ID("ul_menu"));}
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