Draw graphics with JavaScript.
✍️ 3 exercises + code challenge in this lessonThe <canvas> element is a drawing area. It is empty by default; you draw on it with JavaScript.
width and height.canvas.getContext("2d").fillRect(), arc(), fillText() and lineTo().Canvas is used for charts, games, image editing and animations.
Mastering HTML Canvas helps you write clean and reliable HTML code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.
<canvas id="c" width="320" height="180" style="border: 1px solid #CBD5E1;"></canvas>
<script>
const ctx = document.getElementById("c").getContext("2d");
ctx.fillStyle = "#2563EB";
ctx.fillRect(20, 20, 100, 60);
ctx.beginPath();
ctx.arc(220, 70, 45, 0, Math.PI * 2);
ctx.fillStyle = "#14B8A6";
ctx.fill();
ctx.fillStyle = "#071A2F";
ctx.font = "bold 20px Arial";
ctx.fillText("Hello Canvas", 90, 160);
</script>Check what you learned in “HTML Canvas”.
Get the 2D drawing context.
const ctx = canvas.("2d");
Canvas graphics are drawn with…
Add a <canvas> element with the id "board", width 300 and height 150.
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