<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        *{
            margin:0;
            padding:0;
        }
        ul{
            list-style: none;
        }

        #box{
            width:200px;
            height: 200px;
            font-weight:bold;">#999;
        }
    </style>
</head>
<body>
    <div id="box">

    </div>

        <script>
             var box = document.querySelector('#box')


             box.addEventListener('touchstart',function(){
                box.style.backgroundColor = 'red'
             })


             box.addEventListener('touchmove',function(){
                 box.style.backgroundColor = 'yellow'
                 box.innerHTML = Math.random()
             })

             box.addEventListener('touchend',function(){
                 box.style.backgroundColor = 'blue'
             })

             box.addEventListener('touchcancel',function(){
                 box.style.backgroundColor = 'pink'
             })

            setTimeout(function(){
                    alert('恭喜你中奖了')
            },3000)




        </script>
</body>
</html>