Đặt kiểu nắp cho nét vẽ trên canvas
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Setting Stroke Cap Style on the Canvas</title>
<style>
canvas {
border: 1px solid #000;
}
</style>
<script>
window.onload = function() {
var canvas = document.getElementById("myCanvas");
var context = canvas.getContext("2d");
context.lineWidth = 10;
context.strokeStyle = "orange";
context.lineCap = "round";
context.arc(150, 150, 80, 1.2 * Math.PI, 1.8 * Math.PI, false);
context.stroke();
};
</script>
</head>
<body>
<canvas id="myCanvas" width="300" height="200"></canvas>
</body>
</html>
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