<!DOCTYPE html><html><head> <title></title> <meta charset="UTF-8"> <meta http-equiv="Access-Control-Allow-Origin" content="*"> <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script> <style> html,body{ font-size: 100px; } html,body{ width: 100%; height: 100%; overflow: hidden; } .film-box{ width:100%; height: 100%; } ul{ position: relative; width: 100%; list-style: none; } ul li { position: absolute; top: 0; left: 0; z-index: 1; width:0rem; height: 0rem; text-align: center; } ul li.film-show{ transition: all 1s; width: 87rem; height: 50rem; } ul li img { /* width: 100%; */ height: 100%; } /* 左右箭头 */ .arrow { position: absolute; width: 100%; top: 50%; /* opacity: 0; */ z-index: 3; } .prev,.next { position: absolute; height: 5rem; width: 3rem; border-radius: 50%; top: 50%; margin-top: -56px; overflow: hidden; text-decoration: none; } .prev{ left: 0; background: url("./imgs/arrow-left.png") no-repeat left top; background-size: 100% 100%; } .next{ right: 0; background: url("./imgs/arrow-right.png") no-repeat right top; background-size: 100% 100%; } .filmindex{ color: #cb2e2e; font-size: 2.4rem; position: absolute; bottom: 12rem; left: 50%; transform: translateX(-50%); } </style></head><body> <div class="film-box" id='app'> <ul id="slide"> <li v-for='(item,index) in films' :key='index' v-bind:class="item.show ? 'film-show' : ''" v-bind:style="{left:filmsHideLeft}" v-bind:data-index = 'index' > <img v-bind:src="item.image" alt=""> </li> </ul> <span class="filmindex">{{ filmCurrIndex + 1 + '/' + films.length}}</span> <div class="arrow" id="arrow"> <a href="javascript:;" id="arrPrev" class="prev" @click='last'></a> <a href="javascript:;" id="arrNext" class="next" @click='next'></a> </div> </div></body><script> var vm = new Vue({ el:'#app', data:{ films:[], filmsHideLeft:'0rem',//控制隐藏图片是从左上角跳出来还是从右上角跳出来 configStart:0, filmCurrIndex:2, config:[ { "transform":"scale(0.6)", "top": '5rem', "left": '-13rem', "zIndex": 2, "backgroundColor":"#98E0AD" }, //0 { "transform":"scale(0.8)", "top": '3rem', "left": '13rem', "zIndex": 3, "backgroundColor":"#BAD1F0" }, //1 { "transform":"scale(1)", "top": '2rem', "left": '45rem', "zIndex": 4, "backgroundColor":"#F3DFDE" }, //2 { "transform":"scale(0.8)", "top": '3rem', "left": '93rem', "zIndex": 3, "backgroundColor":"#BAD1F0" }, //3 { "transform":"scale(0.6)", "top": '5rem', "left":'113rem', "zIndex": 2, "backgroundColor":"#98E0AD" }, //4 ], lessNum:0, }, methods:{ next(){ if (this.lessNum < 5) { this.nextFilmLessFive(); } else { this.nextFilm(); } }, last(){ if (this.lessNum < 5) { this.lastFilmLessFive(); } else { this.lastFilm(); } }, nextFilm(){ let self = this; this.filmsHideLeft = '185rem'; let currShowFirst = parseInt(document.querySelectorAll('.film-show')[0].dataset.index); // 最后一个位于正中央时按下一个不再反应 console.log(currShowFirst,self.films.length) if (currShowFirst + 3 == self.films.length){ return; } // 改变DOM的显示与隐藏 if (self.configStart == 0) { self.films[currShowFirst].show = false; if (currShowFirst + 5 <= this.films.length - 1){// 正中央显示的是倒数第二张或倒数第一张时，按下一个不需要设置哪张显示成true self.films[currShowFirst + 5].show = true; } }else if (self.configStart == 1) { self.films[4].show = true; self.configStart = 0; } else if(self.configStart == 2){ self.films[3].show = true; self.configStart = 1; } console.log(self.films) self.$nextTick(function(){ // 改变DOM的left,top,scale,zIndex,backgroundColor this.filmCurrIndex = (this.filmCurrIndex + 1 >= this.films.length - 1 ? this.films.length - 1 : this.filmCurrIndex + 1); self.assign(); }) }, lastFilm(){ let self = this; this.filmsHideLeft = '0rem'; let currShowFirst = parseInt(document.querySelectorAll('.film-show')[0].dataset.index); if (currShowFirst !== 0) { self.films[currShowFirst -1].show = true; if (currShowFirst + 4 <= this.films.length -1) {// 正中央显示的是倒数第二张或倒数第一张时，按上一个不需要设置哪张显示成false self.films[currShowFirst + 4].show = false; } } else { if (self.configStart == 0) { self.configStart = 1; self.films[4].show = false; } else if (self.configStart == 1) { self.configStart = 2; self.films[3].show = false; } else { // 第一个位于正中央时按上一个不再反应 return; } } console.log(self.films) self.$nextTick(function(){ this.filmCurrIndex = (this.filmCurrIndex - 1) < 0 ? 0 : (this.filmCurrIndex - 1); self.assign(); }) }, lastFilmLessFive(){ let currShowFirst = parseInt(document.querySelectorAll('.film-show')[0].dataset.index); if (this.lessNum === 4) { if (!this.films[0].show) { this.films[0].show = true; } else { if (this.configStart === 2) return; if (this.configStart === 0) { this.configStart = 1; } else if (this.configStart === 1) { this.configStart = 2; this.films[3].show = false } } } else if (this.lessNum === 3) { if (this.configStart === 1) { this.configStart = 2; } else if (this.configStart === 0) { this.configStart = 1; } } else if (this.lessNum === 2) { if (this.configStart === 1) { this.configStart = 2; } } this.$nextTick(function(){ this.filmCurrIndex = (this.filmCurrIndex - 1) < 0 ? 0 : (this.filmCurrIndex - 1); this.assign(); }) }, nextFilmLessFive(){ let currShowFirst = parseInt(document.querySelectorAll('.film-show')[0].dataset.index); if (this.lessNum === 4) { if (!this.films[0].show) return; if (this.configStart === 2) { this.configStart = 1; this.films[3].show = true; } else if (this.configStart === 1) { this.configStart = 0; } else { this.films[0].show = false; } } else if (this.lessNum === 3) { if (this.configStart === 1) { this.configStart = 0; } else if (this.configStart === 2) { this.configStart = 1; } } else if (this.lessNum === 2) { if (this.configStart === 2) { this.configStart = 1; } } this.$nextTick(function(){ console.log(this.filmCurrIndex,this.films.length) this.filmCurrIndex = (this.filmCurrIndex + 1 >= this.films.length - 1 ? this.films.length - 1 : this.filmCurrIndex + 1); this.assign(); }) }, assign() { let self = this; var list= document.getElementById("slide").getElementsByClassName("film-show"); //拿到所有li for (var i = 0; i < list.length; i++){ let json = self.config[i + this.configStart]; for (var attr in json) { list[i].style[attr] = json[attr]; } } } }, mounted(){ this.films = this.films.concat([ {image:'./imgs/9.jpeg',show:true}, {image:'./imgs/1.jpg',show:true}, {image:'./imgs/2.jpg',show:true}, {image:'./imgs/3.jpg',show:true}, {image:'./imgs/4.jpg',show:true}, // {image:'./imgs/5.jpg',show:false}, // {image:'./imgs/6.jpg',show:false}, // {image:'./imgs/7.jpg',show:false}, // {image:'./imgs/8.jpg',show:false}, ]); this.$nextTick(function(){ this.lessNum = this.films.length; if (this.lessNum === 3) { this.configStart = 1; this.filmCurrIndex = 1; } if (this.lessNum === 2) { this.configStart = 2; this.filmCurrIndex = 0; } if (this.lessNum === 1) { this.configStart = 2; this.filmCurrIndex = 0; } this.assign(); }) }, created(){ let rootWidth = document.documentElement.clientWidth || document.body.clientWidth; let rootDom = document.querySelector('html'); rootDom.style.fontSize = rootWidth / 1920 * 10 + 'px'; } }); // 功能增强(以上部分已经实现了旋转木马)： // 以下代码实现目标：鼠标模拟移动端的左滑右滑事件，在左滑右滑中可以切换图片 (function(){ var touchDot,flagLeft = true,flagRight = true; var bodyDom = document.querySelector('body'); bodyDom.addEventListener('mousedown',down,false); bodyDom.addEventListener('mousemove',move,false); bodyDom.addEventListener('mouseup',up,false); bodyDom.addEventListener('mouseout',up,false); function down(event){ touchDot = event.clientX; // 获取触摸时的原点 } function move(event){ if (touchDot !== undefined) { var touchMove = event.clientX; // 向左滑动 if (touchMove - touchDot <= -40) { if (flagLeft) { vm.nextFilm(); flagLeft = false;// 鼠标未抬起之前持续左滑最多只能左滑一张图片 flagRight = true;// 鼠标左滑切换图片后，鼠标未抬起之前可以通过再右滑切换回到之前的图片 } else { touchDot = touchMove; } } // 向右滑动 if (touchMove - touchDot >= 40) { if (flagRight) { vm.lastFilm(); flagRight = false; // 鼠标未抬起之前持续右滑最多只能右滑一张图片 flagLeft = true;// 鼠标右滑切换图片后，鼠标未抬起之前可以通过再左滑切换回到之前的图片 } else { touchDot = touchMove; } } } } function up(event){ // 鼠标抬起重置一切可以进行下一步操作; flagRight = true; flagLeft = true; touchDot = undefined; } }())</script></html>