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Fabric.js Path opacity Property
  • Last Updated : 27 Jan, 2021

In this article, we are going to see how to set the opacity of a Path using Fabric.js. The Path in Fabric.js is movable and can be stretched according to requirements. Further, the Path can be customized when it comes to initial stroke color, height, width, fill color, or stroke width.

To make it possible we are going to use a JavaScript library called Fabric.js. After importing the library, we will create a canvas block in the body tag that will contain the path. After this, we will initialize instances of Canvas and Path provided by Fabric.js and set the opacity of the path using opacity property, and render the path on the canvas as given in the example below.

Syntax:

fabric.Path('path', {
   opacity: Number
});

Parameters: This function accepts a single parameter as mentioned above and described below:

  • opacity: It is a number that specifies the opacity of the circle canvas.

The below example illustrates the use of Fabric.js Path opacity property in JavaScript:

Example:

HTML




<!DOCTYPE html> 
<html
  
<head>
    <!-- FabricJS CDN -->
    <script src
    </script
</head
  
<body
    <div style="text-align: center;width: 400px;"
    <h1 style="color: green;"
        GeeksforGeeks 
    </h1>
  
    <b
        Fabric.js | Path opacity Property 
    </b
  
    </div
  
    <div style="text-align: center;"
        <canvas id="canvas" width="400" height="200"
            style="border:1px solid green;"
        </canvas
    </div
  
    <script
        // Initiate a Canvas instance 
        var canvas = new fabric.Canvas("canvas"); 
  
        var geek = new fabric.Path('M 0 0 L 100 100 L 0 100 z', {
            fill: 'green',
            opacity: .5
        });
  
        canvas.add(geek);
        canvas.centerObject(geek);
    </script
</body
  
</html>

Output:




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