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slide.html
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<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
* {
margin: 0;
padding: 0;
text-decoration: none;
}
body {
padding: 20px;
}
#container {
position: relative;
width: 600px;
height: 400px;
overflow: hidden;
}
#list {
position: absolute;
z-index: 1;
width: 4200px;
height: 400px;
transition:all .8s ease-in-out;
}
#list img {
float: left;
width: 600px;
height: 400px;
}
#buttons {
position: absolute;
left: 250px;
bottom: 20px;
z-index: 2;
height: 10px;
width: 100px;
}
#buttons span {
float: left;
margin-right: 5px;
width: 10px;
height: 10px;
border: 1px solid #fff;
border-radius: 50%;
background: #333;
cursor: pointer;
font-size: 0;
}
#buttons .on {
background: orangered;
}
.arrow {
position: absolute;
top: 180px;
z-index: 2;
display: none;
width: 40px;
height: 40px;
font-size: 36px;
font-weight: bold;
line-height: 39px;
text-align: center;
color: #fff;
background-color: RGBA(0, 0, 0, .3);
cursor: pointer;
}
.arrow:hover {
background-color: RGBA(0, 0, 0, .7);
}
#container:hover .arrow {
display: block;
}
#prev {
left: 20px;
}
#next {
right: 20px;
}
</style>
<script src="tool.js"></script>
</head>
<body>
<div id="container">
<div id="list" style="left: 0">
<img src="img/02.jpg" alt="1" />
<img src="img/03.jpg" alt="2" />
<img src="img/01.jpg" alt="3" />
<img src="img/02.jpg" alt="4" />
<img src="img/04.jpg" alt="5" />
</div>
<div id="buttons">
<span class="on">1</span>
<span>2</span>
<span>3</span>
<span>4</span>
<span>5</span>
</div>
<a href="#" id="prev" class="arrow"><</a>
<a href="#" id="next" class="arrow">></a>
</div>
</body>
<script>
window.onload=function(){
/***
* 1.获取所有DOM节点（prev、next、buttons、list）；
* 2.给prev、next、list绑定点击事件
* 3.编写事假处理函数slide
*/
var timer=null;
var timer1=null;
var prev=getObj("prev");
var next=getObj("next");
var buttons=document.getElementsByTagName("span");
var list=getObj("list");
//step01 end
prev.addEventListener('click',function(){
slide(600,0,"-2400px");
});
next.addEventListener('click',function(){
slide(-600,-2400,"0px");
});
for(var i=0;i<buttons.length;i++){
(function(n){
buttons[n].onclick=function(){
button_control(this,n);
}
})(i)
}
//step 02 end
function slide(speed,terminal,flag){
var left_value=parseInt(list.style.left);
if(left_value===terminal){
list.style.left=flag;
left_value=parseInt(list.style.left);
}else{
left_value+=speed;
list.style.left=left_value+"px";
}
console.log(left_value);
//在修改class前，清空所有class；
for(var i=0;i<buttons.length;i++){
buttons[i].setAttribute("class","");
}
//点击span修改class为“on”；
buttons[left_value/-600].setAttribute("class","on");
}
function button_control(that,num) {
//在修改class前，清空所有class；
for(var i=0;i<buttons.length;i++){
buttons[i].setAttribute("class","");
}
//点击span修改class为“on”；
that.setAttribute("class","on");
//控制图片移动到当前位置
list.style.left=num*(-600)+"px";
}
timer=setInterval(function(){
slide(-600,-2400,"0px");
},2000);
getObj("container").onmouseover=function(){
clearInterval(timer);
};
getObj("container").onmouseout=function(){
clearInterval(timer);
clearInterval(timer1);
timer1=setInterval(function(){
slide(-600,-2400,"0px");
},2000);
}
};
</script>
</html>