运动
swiper插件(内置css和js)
概述:
swiper是一个开源的免费的一个滚动的组件(他可以运用于轮播图 焦点图 滑动效果等)
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内置的Demo(演示)
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他里面包含对应的css (以class的形式)
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包含对应的js文件 js进行操作(面向对象形式进行封装)
swiper的版本很多(从2.0 到 8.0常用的)
5.0 版本
html主体
<!-- class swiper-container 主体内容 --> <div class="swiper-container"> <!-- 表示当前的轮播 --> <div class="swiper-wrapper"> <!-- swiper-slide表示一个个的图 --> <div class="swiper-slide">Slide 1</div> <div class="swiper-slide">Slide 2</div> <div class="swiper-slide">Slide 3</div> <div class="swiper-slide">Slide 4</div> <div class="swiper-slide">Slide 5</div> <div class="swiper-slide">Slide 6</div> <div class="swiper-slide">Slide 7</div> <div class="swiper-slide">Slide 8</div> <div class="swiper-slide">Slide 9</div> <div class="swiper-slide">Slide 10</div> </div> <!-- 分页器 下面的点 --> <div class="swiper-pagination"></div> <!-- 左右切换的箭头 --> <div class="swiper-button-next"></div> <div class="swiper-button-prev"></div> </div>
js主体
//传入选择器 及相关配置 new Swiper('.swiper-container', { // autoplay:{ // delay: 3000, // stopOnLastSlide: true, //移上对应的块 是否停止的动画 // disableOnInteraction: true,//禁用迭代 // } autoplay: true, //开启自动播放 所有的全部使用默认值 pagination: { //分页器 el: '.swiper-pagination', //分页的点生成在哪 }, navigation: {//导航按钮 nextEl: '.swiper-button-next', prevEl: '.swiper-button-prev', }, })
move.js 文件
//获取样式的方法 function getStyle(ele, attr) { return window.getComputedStyle ? window.getComputedStyle(ele, null)[attr] : ele.currentStyle[attr] } //缓冲动画为true function move(ele, target, isBuffer = true,callback) { clearInterval(ele.timer) //清除之前的定时器影响 //针对于px为单位的 width,height,left,top //opacity不需要px //zIndex不需要动画 //获取target对象里面的所有的key ele.timer = setInterval(() => { var flag = true for (let key in target) { //获取当前位置 var current = parseFloat(getStyle(ele, key)) ? parseFloat(getStyle(ele, key)) : 0 //定义步长和对应的目标位置 if(key == 'opacity'){ var step = target[key] - current > 0 ? 0.01 : -0.01 }else{ var step = target[key] - current > 0 ? 10 : -10 } //定时器 if (key == 'zIndex') { //层级 ele.style[key] = target[key] //直接设置 } else { if (isBuffer) { //如果是缓冲的 if (key == 'opacity') { //透明度 // 最小值 0.01 step = (target[key] - current) * 100 / 10 > 0 ? Math.ceil((target[key] - current) * 100 / 10) / 100 : Math.floor((target[key] - current) * 100 / 10) / 100 } else { //其他的 //控制步长的变化 离目标会越来越小 把步长和这个距离绑定 step = (target[key] - current) / 10 > 0 ? Math.ceil((target[key] - current) / 10) : Math.floor((target[key] - current) / 10) } } //没有到达设置为false if (Math.abs(target[key] - current ) > Math.abs(step)) { flag = false } //控制当前位置的变化 current += step //给当前位置赋值 if (key != 'opacity') { ele.style[key] = current + 'px' } else { ele.style[key] = current } } } if (flag) { console.log(123); clearInterval(ele.timer) //如果你的回调是一个函数就执行 if(callback instanceof Function){ callback() } } }, 20) }
面向对象的轮播
class Rotation { constructor(element) { this.banner = element.querySelector('.banner') this.length = this.banner.children.length this.element = element this.prevBtn = element.querySelector('.prev') this.nextBtn = element.querySelector('.next') this.focusList = this.init() this.index = 0 this.autoMove() //调用对应的事件监听 this.handlerChange() this.handlerFocusClick() this.handlerMouseBox() } init() { let ol = document.createElement('ol') //根据对应的个数生成 for (var i = 0; i < this.length; i++) { if (i == 0) { ol.innerHTML += `<li class="selected"></li>` } else { ol.innerHTML += `<li></li>` } } //添加进去 this.element.appendChild(ol) //给ul的后面再添加第一个li //克隆第一个 var clone = this.banner.children[0].cloneNode(true) this.banner.appendChild(clone) //返回所有添加的li return ol.children } changePosition(isRight = true) { if (isRight) { this.index++ if (this.index == this.banner.children.length) { //强行设置对应的为第一个 this.banner.style.left = '0px' //控制对应的下标为0 this.index = 0 } } else { this.index-- //如果到第一个应该切到最后一个 if (this.index == -1) { //强行设置对应的最后一个 this.banner.style.left = this.length * -1 * this.element.clientWidth + 'px' this.index = this.length - 1 } } this.setFocus(this.index) // move('.banner').set('left', -1*liWidth * index + 'px').end() // move('.banner').to(-liWidth * index, 0).end() move(this.banner, { left: -1 * (this.element.clientWidth) * this.index }, true) } autoMove() { this.timer = setInterval(() => { this.changePosition() }, 2000); } setFocus(i) { //超出范围等于0 if (i > this.length - 1) { i = 0 } //小于0 等于最大下标 if (i < 0) { i = this.length - 1 } //排他 //先把所有的全部清除 再给自己设置 // 获取所有的ol里面的li Array.from(this.focusList).forEach((li) => { li.className = '' }) this.focusList[i].className = 'selected' } //焦点点击事件 handlerFocusClick() { //事件委托机制 this.focusList[0].parentElement.onclick = (e) => { e = e || window.event clearInterval(this.timer) if (e.target.nodeName == 'LI') { var i = Array.from(this.focusList).findIndex((li) => { return li == e.target }) //移动到对应的位置 move(this.banner, { left: -this.element.clientWidth * i }, true) //将i赋值给index this.index = i //切焦点 this.setFocus(i) // this.autoMove() 导致多一个定时器无法清除 } } } //移动动盒子上面 handlerMouseBox() { this.banner.parentElement.onmouseenter = () => { //控制俩个div显示 this.nextBtn.style.display = 'block' this.prevBtn.style.display = 'block' //清除动画 clearInterval(this.timer) } this.banner.parentElement.onmouseleave = () => { //控制俩个div隐藏 this.nextBtn.style.display = 'none' this.prevBtn.style.display = 'none' //开始动画 this.autoMove() } } //左右切换处理 handlerChange() { //左边的事件 this.prevBtn.onclick = () => { this.changePosition(false) } //右边的事件 this.nextBtn.onclick = () => { this.changePosition() } } } //调用 var box = document.querySelector('.box') new Rotation(box)
放大镜
class Magnifier { constructor(smallBox, bigBox) { this.smallBox = smallBox this.bigBox = bigBox this.move = smallBox.querySelector('.move') this.bigImg = bigBox.children[0] this.init() this.handlerMouse() } init() { //计算对应的move这个盒子的宽高 // 大的比大的等于小的比小的 bigImg/bigBox = box/move ==> bigImg/box == bigBox/move this.move.style.width = this.smallBox.clientWidth / (this.bigImg.clientWidth / this.bigBox .clientWidth) + 'px' this.move.style.height = this.smallBox.clientHeight / (this.bigImg.clientHeight / this.bigBox .clientHeight) + 'px' //先需要隐藏 this.move.style.display = 'none' this.bigBox.style.display = 'none' } handlerMouse() { //移入移出 this.smallBox.onmouseenter = () => { this.move.style.display = 'block' this.bigBox.style.display = 'block' } this.smallBox.onmouseleave = () => { this.move.style.display = 'none' this.bigBox.style.display = 'none' } //移动 this.smallBox.onmousemove = ({ pageX, pageY }) => { //获取鼠标在smallbox里面位置 let currentX = pageX - this.smallBox.offsetLeft let currentY = pageY - this.smallBox.offsetTop //中心点位置 let centerPoint = { x: this.smallBox.clientWidth / 2, y: this.smallBox.clientHeight / 2 } //移动的位置 let targetPoint = { x: currentX - centerPoint.x, y: currentY - centerPoint.y } //边界判断 if(targetPoint.x<0){ targetPoint.x = 0 } if(targetPoint.y<0){ targetPoint.y = 0 } //最大值判断 let maxPoint = { x: this.smallBox.clientWidth - this.move.offsetWidth, y: this.smallBox.clientHeight - this.move.offsetHeight } if(targetPoint.x > maxPoint.x){ targetPoint.x = maxPoint.x } if(targetPoint.y > maxPoint.y){ targetPoint.y = maxPoint.y } //设置对应的位置 this.move.style.left = targetPoint.x + 'px' this.move.style.top = targetPoint.y + 'px' //还要设置大盒子里面图片的位置 this.bigImg.style.left = -targetPoint.x * this.bigImg.clientWidth / this.smallBox.clientWidth + 'px' this.bigImg.style.top = -targetPoint.y * this.bigImg.clientHeight / this.smallBox.clientHeight + 'px' } } } var small = document.querySelector('.box') var big = document.querySelector('.bigbox') new Magnifier(small, big)
原创文章,作者:ItWorker,如若转载,请注明出处:https://blog.ytso.com/281236.html