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Shadowblur property in html5 canvas

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  • The shadowBlur is one of the shadows property in canvas.
  • It is defined as sets the blur levels for shadows.
  • This value specifies to a number of pixels and the default value is 0.
  • shadowBlur property of the canvas 2D specifies the levels of blurring effect.

Syntax for shadowBlur property in HTML5 Canvas :

context.shadowBlur=number; 

Parameter values for shadowBlur property in HTML5 Canvas:

Value Description
number The blur level for the shadow.

Sample Coding for shadowBlur in HTML Canvas:

Tryit<!DOCTYPE html>
<html>
    <head>
        <title>Wikitechy HTML Canvas shadowBlur with example</title>
    </head>
    <body>
        <h1>Wikitechy HTML Canvas shadowBlur with example</h1>
        <canvas id="wikitechyCanvas" width="300" height="150"
                style="border:1px solid #d3d3d3;">
        </canvas>
        <script>
            var a= document.getElementById("wikitechyCanvas");
            var b = a.getContext("2d");
            b.shadowBlur = 30;
            b.shadowColor = "green";
            b.fillStyle = "purple";
            b.fillRect(30, 30, 120, 100);
        </script>
    </body>
</html>

Code Explanation for shadowBlur HTML canvas:

shadowblur property in HTML5 canvas Code Explanation

  1. Here the name “shadowBlur” is declare within the script tag for shadow of the shape.

Output for shadowBlur:

shadowblur property in HTML5 canvas Output

  1. The color “green” is displayed in the backside of the rectangle, which shows the blur shadows.

Browser Support for shadowBlur:

Yes 9.0 Yes Yes Yes

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