Canvas Drawing State

Drawing operations are configured by the drawing state.

The following code uses the lineWidth property.

canvas {
      border: thin solid black;
      margin: 4px
      <canvas id="canvas" width="500" height="500"> 
      Your browser doesn't support the <code>canvas</code> element 
            var ctx = document.getElementById("canvas").getContext("2d");
            ctx.lineWidth = 2;
            ctx.strokeRect(30, 30, 50, 50);
            ctx.lineWidth = 4;
            ctx.strokeRect(70, 30, 50, 50);
            ctx.lineWidth = 6;
            ctx.strokeRect(130, 30, 50, 50);
            ctx.strokeRect(190, 30, 50, 50);
Click to view this demo.

The following table shows the basic drawing state properties.

fillStylethe style used for filled shapesblack
lineJointhe style used when lines meet in a shapemiter
lineWidththe width of lines1.0
strokeStyleGets or sets the style used for linesblack
  HTML CSS Book 

  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