Setting the Line Join Style

The lineJoin property determines how lines that join one another are drawn.

There are three values:

  • round,
  • bevel
  • miter.

The default value is miter.

 
<!DOCTYPE HTML>
<html>
<head>
<title>Example</title>
<style>
canvas {
      border: thin solid black;
      margin: 4px
}
</style>
</head>
<body>
      <canvas id="canvas" width="500" height="500"> 
      Your browser doesn't support the <code>canvas</code> element 
      </canvas>
      <script>
            var ctx = document.getElementById("canvas").getContext("2d");
            ctx.lineWidth = 20;
            ctx.lineJoin = "round";
            ctx.strokeRect(20, 30, 100, 100);
            ctx.lineJoin = "bevel";
            ctx.strokeRect(160, 20, 100, 100);
            ctx.lineJoin = "miter";
            ctx.strokeRect(300, 30, 130, 100);
      </script>
</body>
</html>
  
Click to view this demo.
Home 
  HTML CSS Book 
    HTML  

canvas:
  1. Getting Started with the Canvas Element
  2. Getting a Canvas Context
  3. Drawing Rectangles
  4. Canvas Drawing State
  5. Setting the Line Join Style
  6. Using Gradients
  7. Using Patterns
  8. Using smaller shapes with an image pattern
  9. Drawing Images
  10. Using Video Images
  11. Using Canvas Images
  12. Setting the Fill & Stroke Styles
  13. Saving and Restoring Drawing State
  14. Drawing Using Paths
  15. Drawing Arcs
  16. Drawing Bezier Curves
  17. Drawing Text
  18. Using Shadows
  19. Using Transparency
Related: