HjLab へようこそ。これは最初の投稿です。
<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<meta http-equiv="Content-Script-Type" content="text/javascript">
</head>
<body>
<canvas id="main"></canvas>
<script>
const FONT = "48px monospace";
const MyCanvas = document.getElementById('main');
const MyContext = MyCanvas.getContext("2d");
MyContext.font = FONT;
MyContext.fillText("Hello World!", 0, 50);
</script>
</body>
</html>