代码：
<!DOCTYPE html>
<html lang="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<head>
<title>五角星</title>
</head>
<body onload="draw()">
<canvas id="myCanvus" width="200px" height="200px" style="border:0px dashed black;">
出现文字表示你的浏览器不支持HTML5
</canvas>
</body>
</html>
<script type="text/javascript">
<!--
function draw(){
var canvas=document.getElementById("myCanvus");
var context=canvas.getContext("2d");
context.fillStyle = "yellow";
context.fillRect(0, 0, 200, 200);
context.strokeStyle = "rgb(250,0,0)";
context.fillStyle = "rgb(250,0,0)"
context.beginPath();
context.moveTo(100, 0);
context.lineTo(100+Math.cos(Math.PI*3/10)*100, 100+Math.sin(Math.PI*3/10)*100);
context.lineTo(100-Math.cos(Math.PI*1/10)*100, 100-Math.sin(Math.PI*1/10)*100);
context.lineTo(100+Math.cos(Math.PI*1/10)*100, 100-Math.sin(Math.PI*1/10)*100);
context.lineTo(100-Math.cos(Math.PI*3/10)*100, 100+Math.sin(Math.PI*3/10)*100);
context.lineTo(100, 0);
context.fill();
context.stroke();
context.closePath();
}
//-->
</script>
时间： 2024-10-05 13:28:03