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就着youtube上的教程用html和js做了个小时钟。
Code:
clock.html
//clock.html <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width"> <title>JS Bin</title> </head> <body> <canvas id="canvas" width="500" height="500"> <script type="text/javascript" src="C:\Users\Administrator\Desktop\Clock\clock.js"></script> </canvas> </body> </html>
clock.js
//clock.js var canvas = document.getElementById(‘canvas‘); var ctx = canvas.getContext(‘2d‘); ctx.strokeStyle = ‘lightblue‘; ctx.lineWidth = 17; ctx.lineCap = ‘round‘; ctx.shadowBlur = 15; ctx.shadowColor = ‘lightblue‘; function degToRad(degree) { var factor = Math.PI/180; return degree*factor; } function renderTime() { var now = new Date(); var today = now.toDateString(); var time = now.toLocaleTimeString(); var hours = now.getHours(); var minutes = now.getMinutes(); var seconds = now.getSeconds(); var milliseconds = now.getMilliseconds(); var newSeconds = seconds+(milliseconds/1000); //Background gradient = ctx.createRadialGradient(250, 250, 5, 250, 250, 300); gradient.addColorStop(0,‘GREY‘); gradient.addColorStop(1,‘BLACK‘); ctx.fillStyle = gradient; ctx.fillRect(0, 0, 500, 500); //Hours ctx.beginPath(); ctx.arc(250, 250, 200, degToRad(270), degToRad(hours*15-90)); ctx.stroke(); //Minutes ctx.beginPath(); ctx.arc(250, 250, 170, degToRad(270), degToRad(minutes*6-90)); ctx.stroke(); //Seconds ctx.beginPath(); ctx.arc(250, 250, 140, degToRad(270), degToRad(newSeconds*6-90)); ctx.stroke(); //Date ctx.font = "25px Arial"; ctx.fillStyle = ‘lightblue‘; ctx.fillText(today, 175, 250); //Time ctx.font = "25px Arial"; ctx.fillStyle = ‘lightblue‘; ctx.fillText(time, 175, 280); } setInterval(renderTime, 40);
效果图：我配色是真的无能= - =
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原文地址：http://www.cnblogs.com/liez/p/5437156.html
