vue實現旋轉木馬動畫
本文實例為大家分享了vue實現旋轉木馬動畫的具體代碼，供大家參考，具體內容如下
圖片數量可為任意值都能正常處理 [1-無限個]：
<!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%;}/* 左右箭頭 */.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 id=’app’><ul id='slide'> <li v-for=’(item,index) in films’ :key=’index’v-bind: v-bind: v-bind:data-index = ’index’ > <img v-bind:src='http://www.b3g6.com/bcjs/item.image' alt=''> </li></ul><span class='filmindex'>{{ filmCurrIndex + 1 + ’/’ + films.length}}</span><div id='arrow'> <a href='javascript:;' @click=’last’></a> <a href='javascript:;' @click=’next’></a></div> </div></body><script> var vm = new Vue({el:’#app’,data:{ films:[], filmsHideLeft:’0rem’,//控制隱藏圖片是從左上角跳出來還是從右上角跳出來 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);// 最后一個位于正中央時按下一個不再反應console.log(currShowFirst,self.films.length)if (currShowFirst + 3 == self.films.length){ return;}// 改變DOM的顯示與隱藏if (self.configStart == 0) { self.films[currShowFirst].show = false; if (currShowFirst + 5 <= this.films.length - 1){// 正中央顯示的是倒數第二張或倒數第一張時，按下一個不需要設置哪張顯示成trueself.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.$nextTick(function(){ // 改變DOM的left,top,scale,zIndex,backgroundColor this.filmCurrIndex = (this.filmCurrIndex + 1 >= this.films.length - 1 ? this.films.length - 1 : this.filmCurrIndex + 1); self.assign();}) }, lastFilm(){let self = this;this.filmsHideLeft = ’0rem’;let currShowFirst = parseInt(document.querySelectorAll(’.film-show’)[0].dataset.index);if (currShowFirst !== 0) { self.films[currShowFirst -1].show = true; if (currShowFirst + 4 <= this.films.length -1) {// 正中央顯示的是倒數第二張或倒數第一張時，按上一個不需要設置哪張顯示成falseself.films[currShowFirst + 4].show = false; }} else { if (self.configStart == 0) {self.configStart = 1;self.films[4].show = false; } else if (self.configStart == 1) {self.configStart = 2;self.films[3].show = false; } else {// 第一個位于正中央時按上一個不再反應return; }}console.log(self.films)self.$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lifor (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’;} }); // 功能增強(以上部分已經實現了旋轉木馬)： // 以下代碼實現目標：鼠標模擬移動端的左滑右滑事件，在左滑右滑中可以切換圖片 (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; // 獲取觸摸時的原點 }function move(event){ if (touchDot !== undefined) {var touchMove = event.clientX;// 向左滑動 if (touchMove - touchDot <= -40) { if (flagLeft) {vm.nextFilm();flagLeft = false;// 鼠標未抬起之前持續左滑最多只能左滑一張圖片flagRight = true;// 鼠標左滑切換圖片后，鼠標未抬起之前可以通過再右滑切換回到之前的圖片 } else {touchDot = touchMove; }}// 向右滑動 if (touchMove - touchDot >= 40) { if (flagRight) {vm.lastFilm();flagRight = false; // 鼠標未抬起之前持續右滑最多只能右滑一張圖片flagLeft = true;// 鼠標右滑切換圖片后，鼠標未抬起之前可以通過再左滑切換回到之前的圖片 } else {touchDot = touchMove; }} }}function up(event){ // 鼠標抬起重置一切可以進行下一步操作; flagRight = true; flagLeft = true; touchDot = undefined;} }())</script></html>
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持好吧啦網。
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