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JavaScript - how to draw circle on canvas element?

4 points
Created by:
Marcin
2441

Simple solution:

context.beginPath();
context.arc(x, y, radius, 0, 2 * Math.PI);
context.stroke();

 

Using JavaScript it is possible to draw circle in following way.

1. arc() method example

// ONLINE-RUNNER:browser;

<!doctype html>
<html>
<head>
  <style>
    
    #my-canvas { border: 1px solid gray; }
    
  </style>
</head>
<body>
  <canvas id="my-canvas" width="200" height="200"></canvas>
  <script>

    var canvas = document.querySelector('#my-canvas');
    var context = canvas.getContext('2d');

    function drawCircle(x, y, radius) {

        context.beginPath();
        context.arc(x, y, radius, 0, 2 * Math.PI);
        context.stroke();
    }

    drawCircle(100, 100, 80);

  </script>
</body>
</html>

See also

  1. JavaScript - how to fill circle with certain color on canvas element?

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