js 通用动画 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin:0;
            padding:0;
            box-sizing: border-box;
        }
        .box{
            margin: 200px;
        }
        .circle_outter{
            width: 200px;
            height: 200px;
            border: 1px solid;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            background-color: antiquewhite;
        }
        .circle_inner{
            width: 100px;
            height: 100px;
            border: 1px solid;
            border-radius: 50%;
            background-color: #fff;
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .circle_inner>div{
            position: absolute;
            display: flex;
            justify-content: center;
        }
        .circle_inner>div:nth-child(2){
            color:red;
            transform: rotate(0deg) translate(0px, -75px) rotate(-0deg);
        }
        .circle_inner>div:nth-child(3){
            color:red;
            transform: rotate(0deg) translate(75px) rotate(-0deg);
        }
        .circle_inner>div:nth-child(4){
            color:red;
            transform: rotate(0deg) translate(0,75px) rotate(-0deg);
        } 
        .circle_inner>div:nth-child(5){
            color:red;
            transform: rotate(0deg) translate(-75px) rotate(-0deg);
        }
    </style>
</head>
<body>
    <div class="box">
    <div class="circle_outter">
        <div class="circle_inner">
            <div class="home">#</div>
            <div>1</div>
            <div>2</div>
            <div>3</div>
            <div>4</div>
        </div>
    </div>
    <button class="btn">打折</button>
    <label for="">价格：6699.00</label>
    </div>
    <script src="./b.js"></script>
    <script>
        function animation(duration,from,to,handler){
            let value=from;
            const speed=(to-from)/duration;
            const startTime=Date.now();
            function _run(){
                const t=Date.now()-startTime;
                if(t>=duration){
                value=to;
                handler(value);
                return;
                }
                value=from+t*speed;
                handler(value);
                requestAnimationFrame(_run);
            }
            _run();
        }
        const label=document.querySelector('label');
        const btn=document.querySelector('.btn');
        btn.onclick=function(){
            animation(2000,6699,30,(value)=>{
                label.textContent=`价格：${value}`
            });
        }
    </script>
</body>
</html>

 

posted @ 2025-12-31 10:05  howhy  阅读(32)  评论(0)    收藏  举报