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carousel.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<script type="text/javascript" src='http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js'></script>
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
#container {
width: 300px;
height: 200px;
overflow: hidden;
border: 1px solid gray;
position: relative;
}
p {
width: 100%;
height: 100%;
top: 0;
position: absolute;
}
#p1 {
background: salmon;
}
#p2 {
background: yellowgreen;
left: 100%;
}
#p3 {
background: forestgreen;
left: 100%;
}
i {
width: 25px;
height: 50px;
background: firebrick;
position: absolute;
top: 50%;
transform: translateY(-50%);
}
i.left {
left: 0;
}
i.right {
right: 0;
}
#cursors {
position: absolute;
bottom: 10px;
right: 10px;
display: flex;
}
a {
padding: 4px;
margin-right: 10px;
background: #fff;
text-decoration: none;
}
a.active {
background: yellow;
color: fuchsia;
}
</style>
</head>
<body>
<div id='container'>
<p id='p1'>p1</p>
<p id='p2'>p2</p>
<p id='p3'>p3</p>
<div id='cursors'>
<a index='0' class='active' href="javascript:;">1</a>
<a index='1' href="javascript:;">2</a>
<a index='2' href="javascript:;">3</a>
</div>
<i class='left'></i>
<i class='right'></i>
</div>
<script>
$('a').click(debunce(jump, 500, true))/$
function jump() {
var index = this.getAttribute('index');
$('a').eq(index).addClass('active').siblings().removeClass('active')
if (inow != index) {
$('#container p').eq(inow).animate({ 'left': '-100%' }, 500);
$('#container p ').eq(index).css({ 'left': '100%' });
$('#container p').eq(index).animate({ 'left': '0px' }, 500);
inow = index;
}
}
$('#container').mouseover(() => {
clearInterval(time);
}).mouseout(() => {
time = setInterval(change, 1800);
})
$('.left').click(debunce(leftChange, 500, true))
$('.right').click(debunce(change, 500, true))
function debunce(fn, delay, immediate) {
var timer = null;
return function () {
var context = this;
console.log(context,'context')
if (timer) clearTimeout(timer)
if (immediate) {
//根据距离上次触发操作的时间是否到达delay来决定是否要现在执行函数
var doNow = !timer;
//每一次都重新设置timer，就是要保证每一次执行的至少delay秒后才可以执行
timer = setTimeout(function () {
timer = null;
}, delay);
//立即执行
if (doNow) {
fn.apply(context)
// fn()
}
} else {
timer = setTimeout(function () {
fn()
}, delay);
}
}
}
function leftChange() {
$('#container p').eq(inow).animate({ 'left': '100%' }, 500);
inow--;
inow = inow % 3;
$('a').eq(inow).attr('class','active').siblings().removeClass();
$('#container p ').eq(inow).css({ 'left': '-100%' });
$('#container p').eq(inow).animate({ 'left': '0px' }, 500);
}
var time = setInterval(change, 1800);
var inow = 0;
function change() {
$('#container p').eq(inow).animate({ 'left': '-100%' }, 500);
inow++;
inow = inow % 3;
$('a').eq(inow).attr('class','active').siblings().removeClass();
$('#container p ').eq(inow).css({ 'left': '100%' });
$('#container p').eq(inow).animate({ 'left': '0px' }, 500);
}
</script>
</body>
</html>