js学习总结----综合案例之微信应用场景(类似于微信音乐相册)

这个demo只是一个大概的思路,具体还需要根据情况来进行

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="reset.css">
    <link rel="stylesheet" href="swiper.min.css">
    <link rel="stylesheet" type="text/css" href="animate.css">
    <style>
        html,body{
            width:100%;
            height:100%;
            overflow:hidden;
        }
        html{
            font-size:100px;/*设计稿640*960*/
        }
        .main,.swiper-container,.swiper-slide{
            width:100%;
            height:100%;
            overflow:hidden;
        }
        .page1{
            position:relative;
            background:url("../img/swiper/bg1.jpg") no-repeat;
            background-size:cover;
        }
        .page1 img{
            position:absolute;    
            opacity:0;        
        }
        .page1 img:nth-child(1){
            left:2rem;
            top:.28rem;
            width:.96rem;
            height:2.32rem;    
                
        }
        .page1 img:nth-child(2){
            right:0;
            top:.28rem;
            width:3.7rem;
            height:6rem;            
        }
        .page1 img:nth-child(3){
            left:.5rem;
            bottom:.8rem;
            width:5.5rem;
            height:5.12rem;            
        }
        .page1 img:nth-child(4){
            left:-1.6rem;
            bottom:0;
            width:7.86rem;
            height:5.88rem;            
        }
        /*实现切换完成后页面中的元素在开始运动的思想:开始的时候当前的这个区域没有对应的ID,当切换到这个区域的时候,我们为其增加ID,在css中我们把所有的动画效果都放在指定的ID下,这样的话只需要让区域有ID,里面的子元素就有动画了*/
        #page1 img:nth-child(1){
            /*注意移动端的样式写两套 并且不加webkit的在后*/
            -webkit-animation:bounceInLeft 1s linear 0s 1 both;
            animation:bounceInLeft 1s linear 0s 1 both;    
        }
        #page1 img:nth-child(2){
            /*注意移动端的样式写两套 并且不加webkit的在后*/
            -webkit-animation:bounceInRight 1s linear .3s 1 both;
            animation:bounceInRight 1s linear .3s 1 both;    
        }
        #page1 img:nth-child(3){
            /*注意移动端的样式写两套 并且不加webkit的在后*/
            -webkit-animation:bounceInUp 1s linear .6s 1 both;
            animation:bounceInUp 1s linear .6s 1 both;    
        }
        #page1 img:nth-child(4){
            /*注意移动端的样式写两套 并且不加webkit的在后*/
            -webkit-animation:bounceInUp 1s linear .9s 1 both;
            animation:bounceInUp 1s linear .9s 1 both;    
        }
        .page2{
            position:relative;
            background:url("../img/swiper/bg2.jpg") no-repeat;
            background-size:cover;
        }
        .page2 img{
            position:absolute;
            top:2.5rem;
            opacity:0;
        }
        .page2 img:nth-child(1){
            top:0;
            left:0;
            width:3.4rem;
            height:1.74rem;
        }
        .page2 img:nth-child(2){
            left:1.48rem;
        }
        .page2 img:nth-child(3){
            left:3.2rem;
        }
        .page2 img:nth-child(4){
            left:4.7rem;
        }
        
        #page2 img:nth-child(1){
            -webkit-animation:bounceInLeft 1s linear 0s 1 both;
            animation:bounceInLeft 1s linear 0s 1 both;    
        }
        #page2 img:nth-child(2){
            -webkit-animation:zoomIn 1s linear .3s 1 both;
            animation:zoomIn 1s linear .3s 1 both;    
        }
        #page2 img:nth-child(3){
            -webkit-animation:zoomIn 1s linear .6s 1 both;
            animation:zoomIn 1s linear .6s 1 both;    
        }
        #page2 img:nth-child(4){
            -webkit-animation:zoomIn 1s linear .9s 1 both;
            animation:zoomIn 1s linear .9s 1 both;    
        }

        .arrow{
            position:absolute;
            left:50%;
            bottom:.2rem;
            z-index:10;
            margin-left:-.24rem;
            width:.48rem;
            height:.36rem;
            background:url("../img/swiper/web-swipe-tip.png") no-repeat;
            background-size:100% 100%;
            
            -webkit-animation:bounce 1s linear 0s infinite both;
            animation:bounce 1s linear 0s infinite both;
        }

        .music{
            display:none;
            position:absolute;
            top:.2rem;
            right:.2rem;
            z-index:10;
            width:.6rem;
            height:.6rem;
            background:url("../audio/music.svg") no-repeat;
            background-size:100% 100%;
        }
        .music.move{
            -webkit-animation :musicMove 1s linear 0s infinite both;
            animation :musicMove 1s linear 0s infinite both;
        }
        .music audio{
            display:none;
        }
        @-webkit-keyframes musicMove{
            0%{
                -webkit-transform:rotate(0deg);
                transform:rotate(0deg);
            }
            100%{
                -webkit-transform:rotate(360deg);
                transform:rotate(360deg);
            }
        }
        @keyframes musicMove{
            0%{
                -webkit-transform:rotate(0deg);
                transform:rotate(0deg);
            }
            100%{
                -webkit-transform:rotate(360deg);
                transform:rotate(360deg);
            }
        }
    </style>
</head>
<body>
    <section class='main'>
        <!--MUSIC-->
        <div class='music' id='musicMenu'>
            <audio src="beyond.mp3" preload = 'none' loop autoplay></audio id='musicAudio'>
            <!-- <audio>
                <source src='beyond.mp3' type='audio/mpeg'/>
                <source src='beyond.wav' type='audio/wav'/>
                <source src='beyond.ogg' type='audio/ogg'/>
            </audio> -->
        </div>
        <!--CONTAINER-->
        <div class='swiper-container'>
            <div class='swiper-wrapper'>
                <div class='swiper-slide page1'>
                    <img src="img/swiper/page1-text1.png" alt="">
                    <img src="img/swiper/page1-text2.png" alt="">
                    <img src="img/swiper/page1-text3.png" alt="">
                    <img src="img/swiper/page1-text4.png" alt="">
                </div>
                <div class='swiper-slide page2'>
                    <img src="img/swiper/page2-text1.png" alt="">
                    <img src="img/swiper/page2-text2.png" alt="">
                    <img src="img/swiper/page2-text3.png" alt="">
                    <img src="img/swiper/page2-text4.png" alt="">
                </div>
            </div>
        </div>
        <!--ARROW-->
        <div class='arrow'></div>

        
    </section>
    <script charset='utf-8' src='swiper.min.js'></script>
    <script>
        //rem
        ~function(){
            var desW = 640,
                winW = document.documentElement.clientWidth,
                ratio = winW / desW,
                oMain = document.querySelector(".main");
            if(winW>desW){
                oMain.style.margin = "0 auto";
                oMain.style.width = desW + 'px';
                return;
            }
            document.documentElement.style.fontSize = ratio*100+"px";

        }()
        new Swiper('.swiper-container',{
            direction:"vertical",
            loop:true,
            /*当切换结束后,给当前展示的区域添加对应的ID,由此实现对应的动画效果*/
            onSlideChangeEnd:function(swiper){
                var slideAry = swiper.slides;//获取当前一共有多少个活动快(包含loop模式前后多加的两个)
                var curIn = swiper.activeIndex;//当前展示的这个区域的索引
                var total = slideAry.length;
                //计算ID是PAGE?
                var targetId = 'page';
                switch(curIn){
                    case 0:
                        targetId += total - 2;
                        break;
                    case total - 1:
                        targetId += 1;
                        break;
                    default:
                        targetId += curIn
                }

                //给当前的活动块设置ID即可,还要把其余的移除
                [].forEach.call(slideAry,function(item,index){
                    if(curIn === index){
                        item.id = targetId;
                        return;
                    }
                    item.id = null;
                })
                slideAry[curIn].id = targetId;

                //最后把animate.css里面的动画to里面添加opacity:1
            }
        })

        //MUSIC
        ~function(){
            var musicMenu = document.getElementById('musicMenu'),
                musicAudio = document.getElementById('musicAudio');

            musicMenu.addEventListener('click',function(){
                if(musicAudio.paused){
                    musicAudio.play();
                    musicMenu.className = "music move";
                    return;
                }
                musicAudio.pause();
                musicMenu.className = "music";

            })
            function controlMusic(){
                musicAudio.volume = 0.1;
                musicAudio.play();
                musicAudio.addEventListener('canplay',function(){
                    musicMenu.style.display = "block";
                    musicMenu.className = "music move";
                })
            }
            window.setTimeout(controlMusic,1000)
        }()
    </script>
</body>
</html>

 上述代码有一个地方动态设置需要动画的ID值的代码,下图可以帮助你理解

原文地址:https://www.cnblogs.com/diasa-fly/p/7346407.html