CanvasRenderingContext2D.shadowOffsetX

The CanvasRenderingContext2D.shadowOffsetX property of the Canvas 2D API specifies the distance that the shadow will be offset in horizontal distance.

Syntax

ctx.shadowOffsetX = offset;

offset

A float specifying the distance that the shadow will be offset in horizontal distance. The default value is 0. Infinity or NaN values are ignored.

Examples

Using the shadowOffsetX property

This is just a simple code snippet using the shadowOffsetX property to set a shadow with a horizontal offset. Note that shadows are only drawn, if the shadowColor property is set to a non-transparent value, too.

HTML

<canvas id="canvas"></canvas>

JavaScript

var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');

ctx.shadowColor = 'black';
ctx.shadowOffsetX = 10;
ctx.shadowBlur = 10;

ctx.fillStyle = 'green';
ctx.fillRect(10, 10, 100, 100);

Edit the code below and see your changes update live in the canvas:

Specifications

Browser compatibility

See also

• The interface defining it, CanvasRenderingContext2D.
• CanvasRenderingContext2D.shadowOffsetY
• CanvasRenderingContext2D.shadowColor
• CanvasRenderingContext2D.shadowBlur