<!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">
<title>轮播图</title>
<style>
* {padding: 0;margin: 0;list-style: none;}
.box {width: 400px;height: 260px;margin: 50px auto;border: 1px solid #f66;position: relative;}
.box .items {width: 400px;height: 260px;position: relative;}
.box .items img { position: absolute; top:0;left: 0;display: none;}
.box .items img:nth-child(1) {display: block;}
.box .controls .prev{width: 50px;height: 50px; position: absolute;left:10px; top: 50%;transform: translateY(-50%)}
.box .controls .next{width: 50px;height: 50px; position: absolute;right:10px; top: 50%;transform: translateY(-50%)}
.points { position: absolute;bottom:20px;left: 50%;transform: translateX(-50%);}
.points li {width: 10px;display: inline-block;height: 10px;border-radius: 50%;background-color: #fff;}
.points li.active { background-color: #f66;}
</style>
</head>
<body>
<div class="box banner1">
<div class="items">
<img src="img/1.jpg" alt="">
<img src="img/2.jpg" alt="">
<img src="img/3.jpg" alt="">
<img src="img/4.jpg" alt="">
<img src="img/5.jpg" alt="">
<img src="img/6.jpg" alt="">
</div>
<div class="controls">
<button class="prev">←</button>
<button class="next">→</button>
</div>
<ul class="points"></ul>
</div>
</body>
<script src="jquery.js"></script>
<script src="jquery.banner.js"></script>
<script>
$('.banner1').fade({
box:$(".box"),
imgs: $('.banner1').find('.items').find('img'), // 必选
prev: $('.banner1').find('.prev'), // 必选，上一页按钮
next: $('.banner1').find('.next'), // 必选, 下一页按钮
points: $('.banner1').find('.points'), // 可选，小圆点
autoplay: true, // 可选, 默认为true
delay: 4000, // 可选，默认为3000
current: 0, // 可选， 默认是第0张图片显示
duration: 500 // 可选， 默认为300 -- 动画时长
})
</script>
</html>
;(function ($) {
'use strict';
$.fn.extend({
fade (options) {
var obj = {} // 字面量对象
// console.log(options)
// console.log('轮播图')
// 1、通过解构赋值获取轮播图的参数
var { imgs, prev, next, points, autoplay, delay, current, duration } = options
// 2、为可选参数设置默认值
autoplay = autoplay === false ? false : true // 自动轮播
delay = delay || 3000 // 自动轮播的时长
current = current || 0 // 默认显示的是哪一个图片
duration = duration || 300 // 每次动画时长
// 3、获取图片的个数
var len = imgs.length
console.log(len)
// 4、默认的图片显示
ani(current)
// 5、点击下一页
next.on('click', function () {
current++
if (current === len) {
current = 0
}
ani(current)
})
// 6、点击上一页
prev.on('click', function () {
current--
if (current === -1) {
current = len - 1
}
ani(current)
})
// 7、显示小圆点 并且给默认的图片对应的小圆点加样式
for (var i = 0; i < len; i++) {
points.append('<li></li>')
}
points.find('li').eq(current).addClass('active').siblings().removeClass('active')
// 8、自动轮播
var timer = null
if (autoplay) {
timer = setInterval(function () {
next.click()
}, delay)
}
// 9、鼠标滑过事件 -- 取消自动轮播，鼠标移除，重新自动轮播
console.log(this)
if (autoplay) {
this.hover(function () {
clearInterval(timer)
}, function () {
timer = setInterval(function () {
next.click()
}, delay)
})
}
// 10、小圆点滑过切换
points.find('li').on('mouseenter', function () {
current = $(this).index()
ani(current)
})
// 封装动画的函数
function ani (current) {
points.find('li').eq(current).addClass('active').siblings().removeClass('active')
imgs.eq(current).stop().fadeIn(duration).siblings().stop().fadeOut(duration)
}
}
})
})(jQuery);
