SVG实现时钟效果

更新时间：2020-07-17 05:48:01 作者：startmvc

本文实例为大家分享了SVG实现时钟效果的具体代码，供大家参考，具体内容如下<!DOCTYPEhtm

本文实例为大家分享了SVG实现时钟效果的具体代码，供大家参考，具体内容如下


<!DOCTYPE html>
<html>

<head>
 <meta charset="utf-8"/>
 <title></title>
 <style>
 * {
 margin: 0;
 }
 </style>
</head>

<body>
<svg width="400" height="400">
 <title>SVG Analog Clock</title>
 <circle id="face" cx="125" cy="125" r="100"
 style="fill: #f1f1f1; stroke: #000;"></circle>
 <g id="ticks" transform="translate(125, 125)">
 <path id="triangle" d="M95 0 L 100 -5 L 100 5 Z"
 transform="rotate(360)"></path>
 </g>
 <g id="hands">
 <path id="hour" d="M 125 125 V 75"
 style="fill: none; stroke: black; stroke-width: 6"
 transform="rotate(0)"></path>

 <path id="minute" d="M 125 125 V 50"
 style="fill: none; stroke: black; stroke-width: 4"
 transform="rotate(0)"></path>

 <path id="second" d="M 125 125 Q 100 100 125 80 T 125 40 V 30"
 style="fill: none; stroke: #f00; stroke-width: 2"
 transform="rotate(0)"></path>
 </g>
 <g id="knob" transform="translate(125, 125)">
 <circle cx="0" cy="0" r="6" style="fill: #333;"></circle>
 </g>
</svg>

<script>
 var svgns = "http://www.w3.org/2000/svg";
 var face = document.getElementById("face"),
 ticks = document.getElementById("ticks"),
 triangle = document.getElementById("triangle"),
 txt = document.getElementById("txt");

 for (var i = 0; i < 11; i++) {
 var temp_triangle = triangle.cloneNode(true);
 var angle = i * 30 + 30;
 temp_triangle.setAttribute("transform", "rotate(" + angle + ")");
 ticks.appendChild(temp_triangle);
 ticks.setAttribute("transform", "translate(125, 125), rotate(-90)");
 }

 var hourHand = document.getElementById("hour"),
 minuteHand = document.getElementById("minute"),
 secondHand = document.getElementById("second");
 var hourTransform, minuteTransform, secondTransform;
 var secPer12Hours = 60 * 60 * 12,
 secPerHour = 60 * 60,
 secPerMinute = 60;

 (function init() {
 hourTransform = hourHand.transform.baseVal.getItem(0);
 minuteTransform = minuteHand.transform.baseVal.getItem(0);
 secondTransform = secondHand.transform.baseVal.getItem(0);
 updateClock();
 })()

 function updateClock() {
 var date = new Date();
 var sec = date.getMilliseconds() / 1000 +
 date.getSeconds() +
 date.getMinutes() * 60 +
 date.getHours() * 60 * 60;
 var hourAngle = (sec % secPer12Hours) * 360 / secPer12Hours,
 minuteAngle = (sec % secPerHour) * 360 / secPerHour,
 secondAngle = (sec % secPerMinute) * 360 / secPerMinute;
 hourTransform.setRotate(hourAngle, 125, 125);
 minuteTransform.setRotate(minuteAngle, 125, 125);
 secondTransform.setRotate(secondAngle, 125, 125);
 window.requestAnimationFrame(updateClock);
 }

</script>
</body>

</html>

浏览器需要支持：requestAnimationFrame 有关requestAnimationFrame的相关知识请自行查阅

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。