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How to draw a circle in JavaScript?
Following is the code to draw a circle in JavaScript −
Example
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.circleCanvas {
border: 3px solid #110101;
}
</style>
</head>
<body>
<h1>Draw a circle in JavaScript</h1>
<canvas class="circleCanvas" width="400" height="200"></canvas><br />
<button class="Btn">CLICK HERE</button>
<h3>Click on the above button to create a circle in the above canvas element</h3>
<script>
let canvasEle = document.querySelector(".circleCanvas");
let BtnEle = document.querySelector(".Btn");
BtnEle.addEventListener("click", () => {
var circle = canvasEle.getContext("2d");
circle.beginPath();
circle.arc(180, 100, 90, 0, 2 * Math.PI);
circle.stroke();
});
</script>
</body>
</html>Output
The above code will produce the following output −
On clicking the ‘CLICK HERE’ button −
Updated on: 21-Jul-2020
2K+ Views
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