慕数据5775487
2016-12-10 19:56
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title></title> <style> *{margin:0;padding:0;text-decoration:none;} body{padding:20px} #container{width:600px;height:400px;border:3px solid #333;overflow:hidden;position:relative;margin:0 auto;} #list{width:4200px;height:400px;position:absolute;z-index:1;} #list img{float:left;} #buttons{position:absolute;width:100px;height:10px;bottom:20px;left:250px;z-index:2;} #buttons span{cursor:pointer;display:block;float:left;width:10px;height:10px;border:1px solid #FFF;border-radius:50%;background:#333;margin-right:5px;} #buttons .on { background: orange;} .arrow{position:absolute;display:none;width:40px;height:40px;line-height:40px;z-index:2;font-size:36px;text-align:center;font-weight:bold;top:180px;background-color:rgba(0,0,0,.3);color:#FFF;} #prev{left:20px;} #next{right:20px;} #container:hover .arrow{display:block;} .arrow:hover{background-color:rgba(0,0,0,.7);} </style> <script> window.onload = function(){ var container = document.getElementById('container'); var list = document.getElementById('list'); var buttons = document.getElementById('buttons').getElementsByTagName('span'); var prev = document.getElementById('prev'); var next = document.getElementById('next'); var index=1; function showButton(){ for (var i = 0; i < buttons.length ; i++) { if( buttons[i].className == 'on'){ buttons[i].className = ''; break; } } buttons[index - 1].className = 'on'; } function animate(offset){ var newLeft=parseInt(list.style.left)+offset; var time = 300; var interval = 10; var speed = offset/(time/interval); function go(){ if((speed<0 && parseInt(list.style.left)>newLeft) || speed>0 &&parseInt(list.style.left)<newLeft){ list.style.left=parseInt(list.style.left)+speed+'px'; setInterval(go,interval); }else{ list.style.left=newLeft+'px'; if(newLeft<-3000){ list.style.left = -600+'px'; } if(newLeft>-600){ list.style.left = -3000+'px'; } } } go(); } next.onclick= function(){ if(index==5){ index=1; }else{ index+=1; } showButton(); animate(-600); } prev.onclick=function(){ if(index==1){ index=5; }else{ index-=1; } showButton(); animate(600); } for(var i=0;i<buttons.length;i++){ buttons[i].onclick=function(){ if(this.className=='on'){ return; } var myindex=parseInt(this.getAttribute('index')); var om=-600*(myindex-index); animate(om); index=myindex; showButton(); } } } </script> </head> <body> <div id="container"> <div id="list" style="left:-600px"> <img src="img/5.jpg" alt="" title=""> <img src="img/1.jpg" alt="" title=""> <img src="img/2.jpg" alt="" title=""> <img src="img/3.jpg" alt="" title=""> <img src="img/4.jpg" alt="" title=""> <img src="img/5.jpg" alt="" title=""> <img src="img/1.jpg" alt="" title=""> </div> <div id="buttons"> <span index="1" class="on"></span> <span index="2" class=""></span> <span index="3" class=""></span> <span index="4" class=""></span> <span index="5" class=""></span> </div> <a href="#" id="prev" class="arrow"><</a> <a href="#" id="next" class="arrow">></a> </div> </body> </html>
找到原因了,计时器用错了
焦点图轮播特效
65279 学习 · 611 问题
相似问题
回答 1
回答 1