用html5实现一个简单的钟表外观
html5已经出来好长时间了,但仍然有不多小伙伴们不太懂,下面小编就来用html5实现一个简单的钟表外观
<html lang="en-US"><style>#myCanvas{border:3px solid blue;}</style><head><script type="text/javascript"> window.onload = function() { var mycanvas = document.getElementById("myCanvas"); var context = mycanvas.getContext("2d");context.lineWidth = 2; context.strokeStyle = "blue"; context.fillStyle = "blue"; context.arc(250,200,5,0,Math.PI*2,true); context.fill(); context.beginPath(); context.arc(250,200,150,0,Math.PI*2,true); context.stroke(); context.translate(250,200); context.rotate(-Math.PI/2);context.save(); for(var i=0;i<60;i++) { if(i % 5 == 0) {context.fillRect(130,0,20,5);context.fillText((i/5 == 0?12:i/5),120,5); } else {context.fillRect(140,0,10,2) } context.rotate(Math.PI/30);//360°每6度旋转一次 }context.fillRect(0,-2,90,3); context.stroke(); }</script></head><body><canvas id=myCanvas width=500px height=400px></canvas></body></html>
效果图