<!doctype html>
<
html
>
<
head
>
<
meta
charset
=
"UTF-8"
/>
<
meta
name
=
"viewport"
content
=
"width=device-width,user-scalable=no"
>
<
title
>Document</
title
>
<
script
type
=
"text/javascript"
>
//获取html
var html = document.documentElement;
//设置html的字体大小 = 可视区的宽度 / 15
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</
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<
style
>
body{
margin: 0;
}
.wrap{
height: 4.68rem;
position: relative;
}
.list{
padding: 0;
margin: 0;
width:400%;
position: absolute;
top:0;
left:0;
list-style: none;
}
.list li{
float: left;
width:15rem;
}
.list img{
width:15rem;
display: block;
}
nav{
width:15rem;
height: 10px;
position: absolute;
bottom:5px;
z-index: 1;
text-align:center;
}
nav a{
width:15px;
height: 15px;
display: inline-block;
background: red;
border-radius:50%;
vertical-align:top;
}
nav a.active{
background:#fff;
}
</
style
>
</
head
>
<
body
>
<
section
>
<
ul
>
<
li
>
<
img
src
=
"img/img.jpg"
alt
=
""
/>
</
li
>
<
li
>
<
img
src
=
"img/img2.jpg"
alt
=
""
/>
</
li
>
<
li
>
<
img
src
=
"img/img3.jpg"
alt
=
""
/>
</
li
>
<
li
>
<
img
src
=
"img/img4.jpg"
alt
=
""
/>
</
li
>
</
ul
>
<
nav
>
<
a
href
=
"javascript:;"
></
a
>
<
a
href
=
"javascript:;"
></
a
>
<
a
href
=
"javascript:;"
></
a
>
<
a
href
=
"javascript:;"
></
a
>
</
nav
>
</
section
>
<
script
type
=
"text/javascript"
>
var wrap=document.getElementsByClassName("wrap")[0],
list=document.getElementsByClassName("list")[0],
disX=0,
listL=0,
n=0,
w=wrap.clientWidth,
s=0,
timer=0;
a=document.getElementsByTagName("a");
list.addEventListener("touchstart",start);
list.addEventListener("touchmove",move);
list.addEventListener("touchend",end);
list.innerHTML+=list.innerHTML;
len=list.children.length;
console.log(len);
list.style.width=w*len+"px";
function start(ev){
clearInterval(timer);
var e=ev.changedTouches[0];
disX=e.pageX;
list.style.transition="none";
var num=Math.round(list.offsetLeft/w);
list.style.left=num*w+"px";
if(num==0){
num=a.length;
list.style.left=-num*w+"px";
}
if(-num==len-1){
num=a.length-1;
list.style.left=-num*w+"px";
}
listL=this.offsetLeft;
}
function move(ev){
var e=ev.changedTouches[0];
list.style.left=(e.pageX-disX)+listL+"px";
}
function end(){
var num=Math.round(list.offsetLeft/w);
console.log(num)
list.style.transition="0.5s";
list.style.left=num*w+"px";
a[n].className="";
a[(-num)%a.length].className="active";
n=(-num)%a.length;
timer=setInterval(function(){
inn();
},1000)
s=-num;
}
timer=setInterval(function(){
inn();
},1000)
function inn(){
s++;
list.style.left=-s*w+"px";
list.style.transition="0.5s";
console.log(s);
if(s>len-1){
s=a.length-1;
list.style.transition="none";
list.style.left=-s*w+"px";
console.log(list.style.left);
setTimeout(function(){
list.style.transition="0.5s";
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list.style.left=-s*w+"px";
a[n].className="";
a[s%a.length].className="active";
n=s%a.length;
},30)
}
a[n].className="";
a[s%a.length].className="active";
n=s%a.length;
}
</
script
>
</
body
>
</
html
>