<!DOCTYPE html>
<html>
<head>
<title> </title>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0" />
</head>
<body>
<div>
<div>
<canvas );
yuanhuan(ctx, data, { cood: { x: 15, y: 15 }, radius: 15 })//radius圆半径 //cood圆心坐标
</script>
</body>
</html>