轮播图:可触发效果
:1、按箭头符号可左右切换图片
2、到最后一张的下一张是开头第一张;开头第一张的前一张是最后一张
3、鼠标放在轮播图上时轮播图停止定时器;鼠标移开定时器继续开启
注意:图片需要自己准备且对应
部分HTML代码:
- DOCTYPE html>
- <html lang="en">
-
- <head>
- <meta charset="UTF-8" />
- <meta http-equiv="X-UA-Compatible" content="IE=edge" />
- <meta name="viewport" content="width=device-width, initial-scale=1.0" />
- <title>轮播图点击切换title>
- <style>
- * {
- box-sizing: border-box;
- }
-
- .slider {
- width: 560px;
- height: 400px;
- overflow: hidden;
- }
-
- .slider-wrapper {
- width: 100%;
- height: 320px;
- }
-
- .slider-wrapper img {
- width: 100%;
- height: 100%;
- display: block;
- }
-
- .slider-footer {
- height: 80px;
- background-color: rgb(100, 67, 68);
- padding: 12px 12px 0 12px;
- position: relative;
- }
-
- .slider-footer .toggle {
- position: absolute;
- right: 0;
- top: 12px;
- display: flex;
- }
-
- .slider-footer .toggle button {
- margin-right: 12px;
- width: 28px;
- height: 28px;
- appearance: none;
- border: none;
- background: rgba(255, 255, 255, 0.1);
- color: #fff;
- border-radius: 4px;
- cursor: pointer;
- }
-
- .slider-footer .toggle button:hover {
- background: rgba(255, 255, 255, 0.2);
- }
-
- .slider-footer p {
- margin: 0;
- color: #fff;
- font-size: 18px;
- margin-bottom: 10px;
- }
-
- .slider-indicator {
- margin: 0;
- padding: 0;
- list-style: none;
- display: flex;
- align-items: center;
- }
-
- .slider-indicator li {
- width: 8px;
- height: 8px;
- margin: 4px;
- border-radius: 50%;
- background: #fff;
- opacity: 0.4;
- cursor: pointer;
- }
-
- .slider-indicator li.active {
- width: 12px;
- height: 12px;
- opacity: 1;
- }
- style>
- head>
-
- <body>
- <div class="slider">
- <div class="slider-wrapper">
- <img src="./imgs/slider01.jpg" alt="" />
- div>
- <div class="slider-footer">
- <p>对人类来说会不会太超前了?p>
- <ul class="slider-indicator">
- <li class="active">li>
- <li>li>
- <li>li>
- <li>li>
- <li>li>
- <li>li>
- <li>li>
- <li>li>
- ul>
- <div class="toggle">
- <button class="prev"><button>
- <button class="next">>button>
- div>
- div>
- div>
- <script>
-
- // 需求:当点击左边的按钮可以切换轮播图
- // 分析:右侧按钮点击,变量++;如果大于等于8则复原0;
- // 左侧按钮点击,变量--;如果小于0则复原最后一张
- // 鼠标经过暂停定时器,鼠标离开开始定时器
- // 1. 初始数据
- const sliderData = [
- { url: './imgs/slider01.jpg', title: '对人类来说会不会太超前了?', color: 'rgb(100, 67, 68)' },
- { url: './imgs/slider02.jpg', title: '开启剑与雪的黑暗传说!', color: 'rgb(43, 35, 26)' },
- { url: './imgs/slider03.jpg', title: '真正的jo厨出现了!', color: 'rgb(36, 31, 33)' },
- { url: './imgs/slider04.jpg', title: '李玉刚:让世界通过B站看到东方大国文化', color: 'rgb(139, 98, 66)' },
- { url: './imgs/slider05.jpg', title: '快来分享你的寒假日常吧~', color: 'rgb(67, 90, 92)' },
- { url: './imgs/slider06.jpg', title: '哔哩哔哩小年YEAH', color: 'rgb(166, 131, 143)' },
- { url: './imgs/slider07.jpg', title: '一站式解决你的电脑配置问题!!!', color: 'rgb(53, 29, 25)' },
- { url: './imgs/slider08.jpg', title: '谁不想和小猫咪贴贴呢!', color: 'rgb(99, 72, 114)' },
- ]
-
-
-
- script>
- body>
-
- html>
JavaScript代码:
- // 获取p元素
- const p = document.querySelector('.slider-footer p')
- //获取footer
- const footer = document.querySelector('.slider-footer')
- // 获取右边按钮
- const next = document.querySelector('.next')
- // 获取左边按钮
- const prev = document.querySelector('.prev')
- let i = 0
-
- // while (true) {
- //渲染对应的数据
- function move(i) {
- img.src = sliderData[i].url
- p.innerHTML = sliderData[i].title
- // 获取元素
- footer.style.backgroundColor = sliderData[i].color
- // 先删掉之前的active
- document.querySelector('.slider-indicator .active').classList.remove('active')
- // 只让当前的litianjia active
- document.querySelector(`.slider-indicator li:nth-child(${i + 1})`).classList.add('active')
- }
-
- //定时器函数
- function timer() {
-
- }
- next.addEventListener('click', function () {
- // if (i >= 8)
- // i = 0
- // i++
- i++
- i = i >= sliderData.length - 1 ? 0 : i
- // 调用渲染函数
- move(i)
- })
- prev.addEventListener('click', function () {
- // if (i < 0)
- // i = 7
- i--
- i = i < 0 ? sliderData.length - 1 : i
- // 调用渲染函数
- move(i)
-
- })
- // }
-
- // 记录定时器id
- let timeId = 0
- // 自动播放
- timeId = setInterval(function () {
- // 利用js自动调用点击事件
- next.click()
- }, 1000)
-
- document.querySelector('.slider').addEventListener('mouseenter', function () {
- // 停止定时器
- clearInterval(timeId)
-
- })
- //鼠标移开开启定时器
- document.querySelector('.slider').addEventListener('mouseleave', function () {
- timeId = setInterval(function () {
- // 利用js自动调用点击事件
- next.click()
- }, 1000)
- }
- )