標籤：css3 字型 圓角 close style onload head net element
<!DOCTYPE html5>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>CSS3-Canvas畫布（圖形-三角形）</title>
<script>
window.onload=function () {
var canvas=document.getElementById("canvas");//擷取canvas對象
var ctx=canvas.getContext("2d"); //建立二維的繪圖內容物件
ctx.beginPath();
ctx.linewidth=20;
ctx.lineJoin="round"; //兩條線交匯時的邊角類型（miter 尖角預設 bevel斜角 round 圓角 ）
ctx.moveTo(10,10);
ctx.lineTo(100,100);
ctx.lineTo(400,10);
// ctx.lineTo(10,10);
ctx.closePath(); //closePath() 關閉路徑 閉合
ctx.strokeStyle="blue";// strokeStyle 只能填充該路徑的顏色
ctx.fillStyle="red";// fillStyle 填充字型顏色、填充路徑地區、繪圖區域
ctx.fill();// fill() 填充字型
ctx.stroke();
}
</script>
</head>
<body>
<h2>Canvas畫布（圖形）</h2>
<canvas id="canvas" width="500" height="500" style="border:1px solid red ">
瀏覽器不支援canvas
</canvas>
</body>
</html>
CSS3-Canvas畫布（圖形-三角形）
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