CanvasRenderingContext2D.shadowOffsetY

The CanvasRenderingContext2D.shadowOffsetY property of the Canvas 2D API specifies the distance that shadows will be offset vertically.

Syntax

ctx.shadowOffsetY = offset;

offset

A float specifying the distance that shadows will be offset vertically. The default value is 0. Infinity and NaN values are ignored.

Examples

Using the shadowOffsetY property

This example uses the shadowOffsetY property to apply a vertical offset to a shadow. Note that shadows are only drawn if the shadowColor property is set to a non-transparent value, as well.

HTML

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

JavaScript

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

ctx.shadowColor = 'red';
ctx.shadowOffsetY = 25;
ctx.shadowBlur = 10;

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

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

Specifications

Browser compatibilityUpdate compatibility data on GitHub

See also

• The interface defining this property: CanvasRenderingContext2D.
• CanvasRenderingContext2D.shadowOffsetX
• CanvasRenderingContext2D.shadowColor
• CanvasRenderingContext2D.shadowBlur