Web clock_html/css_WEB-ITnose-HTML Tutorial-php.cn

Web clock_html/css_WEB-ITnose

WBOY

Release： 2016-06-24 13:05:03

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Use HTML and CSS to draw a clock. The renderings and materials are as shown below (note that the pointer can be rotated to any position)

<!DOCTYPE html><html>    <head>        <meta charset="utf-8" />        <title>clock</title>                <style>.clock, .hand {    background-image: url(clock1.png);}.clock {    margin: 20px auto;    position: relative;    width: 760px;    height: 730px;    background-position: -198px -68px;}.hand {    display: none;    position: absolute;    left: 356px;    top: 114px;    width: 50px;    height: 350px;        -webkit-transform-origin: center 254px;    -moz-transform-origin: center 254px;    -ms-transform-origin: center 254px;    transform-origin: center 254px;}.hour {    background-position: -112px 377px;}.minute {    background-position: -63px 377px;}.second {    background-position: -17px 377px;    -webkit-transition: -webkit-transform 0.5s;    -moz-transition: -moz-transform 0.5s;    -ms-transition: -ms-transform 0.5s;    transition: transform 0.5s;}        </style>    </head>    <body>        <div class="clock">            <div class="hour hand"></div>            <div class="minute hand"></div>            <div class="second hand"></div>        </div>        <script>var hourHand = document.querySelector(".clock .hour"),    minuteHand = document.querySelector(".clock .minute"),    secondHand = document.querySelector(".clock .second");update();hourHand.style.display = "block";minuteHand.style.display = "block";secondHand.style.display = "block";function update() {    var time = new Date();    var hh = time.getHours(),        mm = time.getMinutes(),        ss = time.getSeconds();        var hhDeg = 360 * (hh * 3600 + mm * 60) / (12 * 3600),        mmDeg = 360 * (mm * 60 + ss) / 3600,        ssDeg = 6 * (hh * 3600 + mm * 60 + ss);        //BUG: 23:59:59 -> 00:00:00 second hand transition will go wild!        hourHand.style.transform = "rotate(" + hhDeg + "deg)";    hourHand.style.webkitTransform = "rotate(" + hhDeg + "deg)";    hourHand.style.MozTransform = "rotate(" + hhDeg + "deg)";    hourHand.style.msTransform = "rotate(" + hhDeg + "deg)";        minuteHand.style.transform = "rotate(" + mmDeg + "deg)";    minuteHand.style.webkitTransform = "rotate(" + mmDeg + "deg)";    minuteHand.style.MozTransform = "rotate(" + mmDeg + "deg)";    minuteHand.style.msTransform = "rotate(" + mmDeg + "deg)";        secondHand.style.transform = "rotate(" + ssDeg + "deg)";    secondHand.style.webkitTransform = "rotate(" + ssDeg + "deg)";    secondHand.style.MozTransform = "rotate(" + ssDeg + "deg)";    secondHand.style.msTransform = "rotate(" + ssDeg + "deg)";    setTimeout(update, 200);}        </script>    </body></html>

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