shadowBlur Property - Javascript Canvas Reference

Javascript examples for Canvas Reference:shadowBlur


The shadowBlur property sets or gets the blur level for shadows. Its default value is 0.

JavaScript syntax

context.shadowBlur = number;

Property Values

Value Description
number The blur level for the shadow


Draw a red rectangle with a black shadow, with blur level of 20:

Demo Code

ResultView the demo in separate window

<!DOCTYPE html>

<canvas id="myCanvas" width="300" height="250" style="border:1px solid #d3d3d3;">
Your browser does not support the HTML5 canvas tag.</canvas>


var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
ctx.shadowBlur = 20;//  w  ww . j  ava 2  s. c  o m
ctx.shadowColor = "black";
ctx.fillStyle = "red";
ctx.fillRect(20, 20, 100, 80);



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