老师你好，Safari上面关于JavaScript的问题请教：未设定用来打开 URL jacas
焦点图轮播
*{
margin: 0;
padding: 0;
}
a{
text-decoration: none;
color: #fff;
}
#contenter{
width: 725px;
height: 400px;
border:3px solid #333;
overflow: hidden;
position: relative;
}
#btn{
width: 150px;
text-align: center;
position: absolute;
z-index: 2;
bottom: 20px;
left: 200px;
}
img{
width:725px;
height:400px;
}
#btn a{
width: 20px;
height: 20px;
background-color: #fff;
border-radius: 50px;
border: 2px solid #000;
display: inline-block;
opacity: 0.6;
margin:0 5px;
}
#btn .on{
background-color: yellow;
}
#Jiao{
width: 725px;
position: absolute;
top: 175px;
z-index: 2;
display: none;
}
#contenter:hover #Jiao{
display: block;
}
.jiao{
width: 50px;
height: 50px;
text-align: center;
line-height: 50px;
background-color: #000;
display: inline-block;
opacity: 0.6;
}
.jiao:hover{
opacity: 1;
transition: 1s;
}
#prev{
margin-right: 620px;
}
#img{
width: 4410px;
height: 400px;
position: absolute;
z-index: 1;
}
#img img{
float: left;
}
<script type="text/javascript">
// 当页面加载完毕后才获开元素
window.onload=function(){
var Contenter=document.getElementById("contenter");
var Img=document.getElementById("img");
var Btn=document.getElementById("btn").getElementsByTagName('a');
var Prev=document.getElementById("prev");
var Next=document.getElementById("next");
var index=1;
function lightbtn(){
for(i=0;i-730) {
Img.style.left=-2920+"px";
}
if (newleft |
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