Canvas shadowBlur Property
Example
Draw a red rectangle with a black shadow, with blur level of 20:
JavaScript:
const canvas = document.getElementById("myCanvas");
const ctx = canvas.getContext("2d");
ctx.shadowBlur = 20;
ctx.shadowColor = "black";
ctx.fillStyle = "red";
ctx.fillRect(20, 20, 100, 80);
Try it Yourself »
Description
The shadowBlur property sets or returns the blur level for shadows.
The default value is 0.
See Also:
The shadowColor Property (Set shadow color)
The shadowOffsetX Property (Set shadow x position)
The shadowOffsetY Property (Set shadow y position)
The fillRect() Method (Draw a filled rectangle)
The fillStyle() Property (Set the fill color/style)
Syntax
| context.shadowBlur = number |
Property Values
| Value | Description | Play it |
|---|---|---|
| number | The shadow blur level | Play it » |
Browser Support
The <canvas> element is an HTML5 standard (2014).
shadowBlur is supported in all modern browsers:
| Chrome | Edge | Firefox | Safari | Opera | IE |
| Yes | Yes | Yes | Yes | Yes | 9-11 |
❮ Canvas Reference
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