仿Flash幻灯带缓冲的焦点图切换轮播(黑色风格)

发布时间：2018-09-12 02:43:17 所属栏目：Asp教程来源：站长网

导读：就在刚才，烈火给大家介绍一款类似滑动门的图片轮播效果，现在再给出一款黑色风格带缓冲的JS焦点图代码，效果非常酷，刚刚打开时有Loading加载中效果，图片大小可通过修改CSS自定义实现。实例演示： !DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transiti

　　就在刚才，烈火给大家介绍一款类似滑动门的图片轮播效果，现在再给出一款黑色风格带缓冲的JS焦点图代码，效果非常酷，刚刚打开时有Loading加载中效果，图片大小可通过修改CSS自定义实现。

　　实例演示：

<!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=GBK" /> <base href="http://hi.baidu.com/koen_li"> <title>黑色风格JS焦点图代码 - Liehuo.Net</title> <style type="text/css"> *{margin:0;padding:0;border:0;list-style:none;} body{padding:20px;background:#eee;} #myfocus{width:450px;height:296px;overflow:hidden;padding:6px 6px 24px;background:#333 url() no-repeat;position:relative;} #myfocus #myloading{position:absolute;top:0;left:0;z-index:9999;width:462px;height:326px;background:#333;color:#f60;font-size:12px;text-align:center;padding-top:90px;} #myfocus #myloading .bg{position:absolute;top:0;left:0;z-index:-1;}/*载入画面*/ #myfocus .pics{width:450px;height:296px;overflow:hidden;position:relative;} #myfocus .pics ul{width:2700px;height:296px;position:absolute;}/*图片大小450*6幅=2700*/ #myfocus .pics ul li{width:450px;height:296px;float:left;position:relative;} #myfocus .pics ul li div,#myfocus .pics ul li div span,#myfocus .pics ul li div a{display:block;position:absolute;bottom:0;left:0;width:100%;height:34px;} #myfocus .pics ul li div span{filter:alpha(opacity=50);opacity: 0.5;background:#000;}/*文字标题的背景样式*/ #myfocus .pics ul li div a{line-height:34px;overflow:hidden;padding-left:16px;text-decoration:none;font-size:14px;color:#fff;font-weight:bold;}/*文字标题样式*/ #myfocus .mybtn{position:absolute;bottom:8px;right:8px;} #myfocus .mybtn ul li{float:left;width:16px;height:6px;margin-left:4px;overflow:hidden;border:1px solid #000;background:#ccc;cursor:pointer;} #myfocus .mybtn ul li.current{background:#f60;} </style> <script type="text/javascript"> /*design by koen @ 10nian5yue11ri*/ /*http://hi.baidu.com/koen_li*/ function setFocus(ID,t){//主函数... function $(id) {return document.getElementById(id);} function $$(tag,obj){return (typeof obj=='object'?obj:$(obj)).getElementsByTagName(tag);} var n='';//标记 function showPics(num){ if(n===num) return true; if(n==='') n=0; else n=num; var pics=$$('ul',ID)[0]; var tit=$$('div',pics)[num]; if (!pics.style.left){pics.style.left = 0+'px';} if (!tit.style.bottom||parseInt(tit.style.bottom)>-34){tit.style.bottom = -34+'px';} var endX=-num*$$('div',ID)[0].clientWidth; var goimg=function(){ X=parseInt(pics.style.left); if (pics.movement){clearTimeout(pics.movement);} if(parseInt(pics.style.left)==endX) return true; if((endX-X)>0) X+=Math.ceil((endX-X) / 10); else X+=Math.floor((endX-X) / 10); pics.style.left=X+'px'; pics.movement = setTimeout(goimg, 5); } var gotit=function(){ var y=parseInt(tit.style.bottom); if (tit.movement){clearTimeout(tit.movement);} if(y==0) return true; y+=Math.ceil((0-y) / 10); if(parseInt(pics.style.left)==endX) tit.style.bottom=y+'px'; if(y<0) tit.movement = setTimeout(gotit, 16); } goimg(); gotit(); } function classNormal() {//数字标签样式清除 var focusBtnList = $$('li',$$('ul',ID)[1]); for (var i = 0; i < focusBtnList.length; i++) { focusBtnList[i].className = ''; } } function focusChange() {//交互切换 var focusBtnList = $$('li',$$('ul',ID)[1]); for (var i = 0; i < focusBtnList.length; i++) { focusBtnList[i].I=i; focusBtnList[i].onmouseover = function(){ showPics(this.I); classNormal(); focusBtnList[this.I].className = 'current'; } } } var autoFocusChange=function() {//自动运行 if (atuokey) return; var focusBtnList = $$('li',$$('ul',ID)[1]); for (var i = 0; i < focusBtnList.length; i++) { if (focusBtnList[i].className == 'current') { var currentNum = i; } } if(currentNum<focusBtnList.length-1){ showPics(currentNum+1); classNormal(); focusBtnList[currentNum+1].className = 'current'; }else if(currentNum==focusBtnList.length-1){ showPics(0); classNormal(); focusBtnList[0].className = 'current'; } } var atuokey = ''; function init(){//初始化<div><span></span><a href="#">文字说明</a></div> var li=$$('li',$$('ul',ID)[0]); for(var i=0;i<li.length;i++){ var a=li[i].getElementsByTagName('a')[0]; var img=li[i].getElementsByTagName('img')[0]; li[i].innerHTML=li[i].innerHTML+'<div><span></span><a href="'+a+'">'+img.alt+'</a></div>'; } var s='<div class="mybtn"><ul>'; for(var i=0;i<$$('li',$$('ul',ID)[0]).length;i++){s+='<li></li>'} s+='</ul></div>'; $(ID).innerHTML+=s; $(ID).removeChild($('myloading')); showPics(0); classNormal(); $$('li',$$('ul',ID)[1])[0].className = 'current'; $(ID).onmouseover = function() { atuokey = true; clearInterval(auto); } $(ID).onmouseout = function() { atuokey = false; auto=setInterval(autoFocusChange, T); } } var T=t*1000;//每帧图片停留的时间，1000=1秒 var auto=''; init(); focusChange(); auto=setInterval(autoFocusChange, T); }; window.onload=function(){ setFocus('myfocus',4); } </script> </head> <body> <div id="myfocus"> <div id="myloading">请稍候...<br /><br /><img src="http://www.veryhuo.com/uploads/common/images/loading_1.gif" /></div> <div class="pics"> <ul> <li><a href="#"><img src="http://www.veryhuo.com/uploads/common/images/liehuonet_400x345_1.jpg" alt="图片1" /></a></li> <li><a href="#"><img src="http://www.veryhuo.com/uploads/common/images/liehuonet_400x345_2.jpg" alt="图片2" /></a></li> <li><a href="#"><img src="http://www.veryhuo.com/uploads/common/images/liehuonet_400x345_3.jpg" alt="图片3" /></a></li> <li><a href="#"><img src="http://www.veryhuo.com/uploads/common/images/liehuonet_400x345_4.jpg" alt="图片4" /></a></li> <li><a href="#"><img src="http://www.veryhuo.com/uploads/common/images/liehuonet_400x345_5.jpg" alt="图片5" /></a></li> <li><a href="#"><img src="http://www.veryhuo.com/uploads/common/images/liehuonet_400x345_6.jpg" alt="图片6" /></a></li> </ul> </div> </div> </body> </html> <br /><center>如不能显示效果，请按Ctrl+F5刷新本页，更多网页代码：<a href='http://www.veryhuo.com/' target='_blank'>http://www.veryhuo.com/</a></center>
提示：可修改后代码再运行!

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