Html – 文字时钟
文字时钟，之前在Android上实现了相关效果，闲来无事，弄个网页版的玩玩。。。
直接上代码：
DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Text Clocktitle>
<style type="text/css">
html, body {
margin: 0;
padding: 0;
background: black;
}
.root {
display: flex;
justify-content: center;
}
.container {
display: block;
background: black;
}
style>
head>
<body>
<div class="root">
<canvas id="container" class="container">canvas>
div>
<script type="text/javascript">
const HOURS = [
"一点", "二点", "三点", "四点", "五点", "六点", "七点", "八点", "九点", "十点", "十一点", "十二点"
];
const MINUTES = [
"一分", "二分", "三分", "四分", "五分", "六分", "七分", "八分", "九分", "十分",
"十一分", "十二分", "十三分", "十四分", "十五分", "十六分", "十七分", "十八分", "十九分", "二十分",
"二十一分", "二十二分", "二十三分", "二十四分", "二十五分", "二十六分", "二十七分", "二十八分", "二十九分", "三十分",
"三十一分", "三十二分", "三十三分", "三十四分", "三十五分", "三十六分", "三十七分", "三十八分", "三十九分", "四十分",
"四十一分", "四十二分", "四十三分", "四十四分", "四十五分", "四十六分", "四十七分", "四十八分", "四十九分", "五十分",
"五十一分", "五十二分", "五十三分", "五十四分", "五十五分", "五十六分", "五十七分", "五十八分", "五十九分", ""
];
const SECONDS = [
"一秒", "二秒", "三秒", "四秒", "五秒", "六秒", "七秒", "八秒", "九秒", "十秒",
"十一秒", "十二秒", "十三秒", "十四秒", "十五秒", "十六秒", "十七秒", "十八秒", "十九秒", "二十秒",
"二十一秒", "二十二秒", "二十三秒", "二十四秒", "二十五秒", "二十六秒", "二十七秒", "二十八秒", "二十九秒", "三十秒",
"三十一秒", "三十二秒", "三十三秒", "三十四秒", "三十五秒", "三十六秒", "三十七秒", "三十八秒", "三十九秒", "四十秒",
"四十一秒", "四十二秒", "四十三秒", "四十四秒", "四十五秒", "四十六秒", "四十七秒", "四十八秒", "四十九秒", "五十秒",
"五十一秒", "五十二秒", "五十三秒", "五十四秒", "五十五秒", "五十六秒", "五十七秒", "五十八秒", "五十九秒", ""
];
const INTERVAL_UPDATE = 1000;
const mColorCenetr = "#ffffff";
const mColorCur = "#ff0000";
const mColorCom = "#bdbdbd";
const mColorBg = "#000000";
const mFont = "华文行楷";
var mWidth, mHeight;
var mH, mM, mS;
var mH24;
var mWeek, mDate, mTime;
var mRadiusH, mRadiusM, mRadiusS;
var mDegreeH, mDegreeM, mDegreeS;
var mTextSizeCom;
var mTextSizeCenter;
var mOffset;
var mCenterHeight;
var canvas;
var cxt;
var hd, md, sd, av;
window.onload = function () {
initial();
}
window.onresize = function () {
calcSize();
}
function initial() {
canvas = document.getElementById("container");
cxt = canvas.getContext("2d");
calcSize();
curTime();
startTask();
}
function calcSize() {
mWidth = window.innerWidth;
mHeight = window.innerHeight;
mWidth = mHeight = Math.min(mWidth, mHeight);
canvas.width = mWidth;
canvas.height = mHeight;
mTextSizeCom = mWidth / 50;
mTextSizeCenter = mWidth / 35;
mOffset = mTextSizeCenter / 2;
mCenterHeight = (mHeight - mTextSizeCom) / 2;
mRadiusH = mWidth / 6;
mRadiusM = mRadiusH + 4 * mTextSizeCom;
mRadiusS = mRadiusM + 5 * mTextSizeCom;
}
function startTask() {
setInterval(function () {
curTime();
var times = 0;
var interval = setInterval(function () {
if (times > 6) {
clearInterval(interval);
} else {
doAnimation();
times++;
}
}, 10)
}, INTERVAL_UPDATE);
}
function doAnimation() {
av = av - 0.9;
if (mM === 0 && mS === 0) {
mDegreeH = hd + av * 5;
}
if (mS === 0) {
mDegreeM = md + av;
}
mDegreeS = sd + av;
drawCanvas();
}
function updateBg() {
cxt.fillStyle = mColorBg;
cxt.fillRect(0, 0, mWidth, mHeight);
}
function drawCenterInfo() {
cxt.save();
cxt.fillStyle = mColorCenetr;
cxt.font = mTextSizeCenter + "px " + mFont;
var len = (mTime.length -2) * mTextSizeCenter / 2;
cxt.fillText(mTime, (mWidth - len) / 2, mHeight / 2 - mTextSizeCenter * 3 / 2 - mOffset);
var len2 = (mDate.length-2) * mTextSizeCenter / 2;
cxt.fillText(mDate, (mWidth - len2) / 2, mHeight / 2 - mTextSizeCenter / 2);
var len3 = mWeek.length * mTextSizeCenter;
cxt.fillText(mWeek, (mWidth - len3) / 2, mHeight / 2 + mTextSizeCenter / 2 + mOffset);
cxt.restore();
}
function drawHour() {
cxt.save();
cxt.translate(mWidth / 2, mHeight / 2);
cxt.rotate(mDegreeH * Math.PI / 180);
cxt.translate(-mWidth / 2, -mHeight / 2);
for (var i = 0; i < HOURS.length; i++) {
cxt.save();
cxt.translate(mWidth / 2, mHeight / 2);
cxt.rotate(30 * i * Math.PI / 180);
cxt.translate(-mWidth / 2, -mHeight / 2);
if (i + 1 === mH || (i === 11 && mH === 0)) {
cxt.fillStyle = mColorCur;
} else {
cxt.fillStyle = mColorCom;
}
cxt.font = mTextSizeCom + "px " + mFont;
cxt.fillText(HOURS[i], mWidth / 2 + mRadiusH, mCenterHeight);
cxt.restore();
}
cxt.restore();
}
function drawMinute() {
cxt.save();
cxt.translate(mWidth / 2, mHeight / 2);
cxt.rotate(mDegreeM * Math.PI / 180);
cxt.translate(-mWidth / 2, -mHeight / 2);
for (var i = 0; i < MINUTES.length; i++) {
cxt.save();
cxt.translate(mWidth / 2, mHeight / 2);
cxt.rotate(6 * i * Math.PI / 180);
cxt.translate(-mWidth / 2, -mHeight / 2);
if (i + 1 === mM) {
cxt.fillStyle = mColorCur;
} else {
cxt.fillStyle = mColorCom;
}
cxt.font = mTextSizeCom + "px " + mFont;
cxt.fillText(MINUTES[i], mWidth / 2 + mRadiusM, mCenterHeight);
cxt.restore();
}
cxt.restore();
}
function drawSecond() {
cxt.save();
cxt.translate(mWidth / 2, mHeight / 2);
cxt.rotate(mDegreeS * Math.PI / 180);
cxt.translate(-mWidth / 2, -mHeight / 2);
for (var i = 0; i < MINUTES.length; i++) {
cxt.save();
cxt.translate(mWidth / 2, mHeight / 2);
cxt.rotate(6 * i * Math.PI / 180);
cxt.translate(-mWidth / 2, -mHeight / 2);
if (i + 1 === mS) {
cxt.fillStyle = mColorCur;
} else {
cxt.fillStyle = mColorCom;
}
cxt.font = mTextSizeCom + "px " + mFont;
cxt.fillText(SECONDS[i], mWidth / 2 + mRadiusS, mCenterHeight);
cxt.restore();
}
cxt.restore();
}
function drawCanvas() {
updateBg();
drawCenterInfo();
drawHour();
drawMinute();
drawSecond();
}
function curTime() {
let date = new Date();
let year = date.getFullYear();
let month = date.getMonth() + 1;
let day = date.getDate();
let week = date.getDay();
mH24 = date.getHours();
mM = date.getMinutes();
mS = date.getSeconds();
mH = mH24 >= 12 ? mH24 - 12 : mH24;
mTime = formatTime(mH24) + ':' + formatTime(mM) + ':' + formatTime(mS);
mDate = year + '/' + formatTime(month) + '/' + formatTime(day);
mWeek = parseWeek(week);
calculateDegree();
}
function calculateDegree() {
mDegreeH = -360 / 12 * (mH - 1);
mDegreeM = -360 / 60 * (mM - 1);
mDegreeS = -360 / 60 * (mS - 1);
hd = mDegreeH;
md = mDegreeM;
sd = mDegreeS;
av = 6;
}
function formatTime(fn) {
return fn < 10 ? "0" + fn : fn;
}
function parseWeek(week) {
var mWeek;
switch (week) {
case 1:
mWeek = "星期一";
break;
case 2:
mWeek = "星期二";
break;
case 3:
mWeek = "星期三";
break;
case 4:
mWeek = "星期四";
break;
case 5:
mWeek = "星期五";
break;
case 6:
mWeek = "星期六";
break;
case 0:
mWeek = "星期日";
break;
}
return mWeek;
}
script>
body>
html>
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