<!doctype html>
<html>
<head>
<title>canvas dClock</title>
</head>
<body>
<canvas id = "clock" width = "500px" height = "200px">
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</canvas>
<script type = "text/javascript">
var clock = document.getElementById("clock");
var cxt = clock.getContext("2d");
//显示数字时钟
function showTime(m, n) {
cxt.clearRect(0, 0, 500, 500);
var now = new Date;
var hour = now.getHours();
var min = now.getMinutes();
var sec = now.getSeconds();
var msec = now.getMilliseconds();
hour = hour >= 10 ? hour : "0" + hour;
min = min >= 10 ? min : "0" + min;
sec = sec >= 10 ? sec : "0" + sec;
msec = (msec >= 10 && msec < 100) ? ("0" + msec) : (msec >= 0 && msec < 10) ? ("00" + msec) : msec;
bdigital(m, n, hour);
bdigital(m + 160, n, min);
bdigital(m + 320, n, sec);
//tdigital(m + 480, n, msec);
//三位数的显示
function tdigital(x, y, num) {
var ge = num % 10;
var shi = (parseInt(num / 10)) % 10;
var bai = parseInt((parseInt(num / 10)) / 10) % 10;
digital(x, y, bai);
digital(x + 70, y, shi);
digital(x + 140, y, ge);
}
//两位数的显示
function bdigital(x, y, num) {
var ge = num % 10;
var shi = (parseInt(num / 10)) % 10;
digital(x, y, shi);
digital(x + 70, y, ge);
}
//画：
//小时与分钟之间
cxt.lineWidth = 5;
cxt.strokeStyle = "#000";
cxt.fillStyle = "#000";
cxt.beginPath();
cxt.arc(m + 140, n + 80, 3, 0, 360, false);
cxt.fill();
cxt.closePath();
cxt.stroke();