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js钟表案例

HAI6545 人气:0

<!DOCTYPE html>
<html lang="en">
 
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
.clock {
    width: 600px;
    height: 600px;
    margin: 100px auto;
    background: url(/image/shizhong.jpg) 600px/600px;
    position: relative;
}
.clock .h {
    width: 100%;
    height: 100%;
    background: url(/image/时针.jpg) no-repeat center center;
    background-size: 35px;
    z-index: 1;
    position: absolute;
    left: -3px;
    top: -60px;
}
 
.clock .m {
    
    width: 100%;
    height: 100%;
    background: url(/image/分针.jpg) no-repeat center center;
    background-size: 35px;
    z-index: 2;
    position: absolute;
    left: -3px;
    top: -95px;
}
 
.clock .s {
    width: 100%;
    height: 100%;
    background: url(/image/秒针.jpg) no-repeat center center;
    background-size: 25px;
    z-index: 3;
    position: absolute;
    left: -3px;
    top: -95px;
}
    </style>
</head>
 
<body>
    <div class="clock">
        <div class="h" id="hour"></div>
        <div class="m" id="min"></div>
        <div class="s" id="second"></div>
    </div>
</body>
<script>
    var h = document.querySelector(".h")
    var m = document.querySelector(".m")
    var s = document.querySelector(".s") 
    var s = m = h = ms = 0;
 
    setInterval(function () {
        var date = new Date()
        ms = date.getMilliseconds()/* 现在的毫秒 */
        s = date.getSeconds() + ms / 1000;
        m = date.getMinutes() + s / 60;
        h = date.getHours() % 12 + m / 60;
        
        /*秒针一圈360度 一共60秒 每秒6度 */
        second.style.transform = "rotate(" + s * 6 + "deg)"
        second.style.transformOrigin = '  center 67% '
        /*分针一圈360度 一圈走60次 每分钟6度  */
        min.style.transform = "rotate(" + m * 6 + "deg)"
        min.style.transformOrigin = '  center 67% '
/*时针一圈360度 12小时制 一共走12次  d 每小时30度  */
        hour.style.transform = "rotate(" + h * 30 + "deg)"
        hour.style.transformOrigin = '  center 60% '
    },30)
</script>
 
</html>

效果:

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