JavaScript - fillStyle vs strokeStyle

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In this article, we would like to show you the difference between fillStyle and strokeStyle in JavaScript.

Quick solution:

1. strokeStyle is used for setting the shape outline color,

2 fillStyle is used for setting the fill color.


The properties can be set to a string representing a CSS color value, a gradient or a pattern. By default, the strokeStyle and fillStyle colors are set to black.


Practical example

In this section, we present a practical example that shows the difference between strokeStyle and fillStyle properties.

// ONLINE-RUNNER:browser;

<!doctype html>

    #my-canvas { border: 1px solid gray; }

  <canvas id="my-canvas" width="200" height="200"></canvas>

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

    context.lineWidth = 10;           // sets shape outline width (in px)

    // strokeStyle
    context.strokeStyle = 'green';    // sets shape outline color

    // fillStyle
    context.fillStyle = 'red';    	  // sets shape fill color

    // drawing
    context.rect(50, 50, 100, 100);   // square shape
    context.fill();					  // fills the shape with fillStyle color


See also

  1. JavaScript - draw square on canvas element

  2. JavaScript - set line width (thickness) on canvas element


  1. fillStyle - Web APIs | MDN
  2. strokeStyle - Web APIs | MDN

Alternative titles

  1. JavaScript - fillStyle vs strokeStyle (HTML canvas element)
  2. JavaScript - fillStyle and strokeStyle differences
  3. JavaScript - difference between fillStyle and strokeStyle
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