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Fabric.js Polyline backgroundColor Property
  • Last Updated : 20 Jan, 2021

In this article, we are going to create see how to set the background color of the canvas Polyline using FabricJS. The canvas Polyline means Polyline is movable and can be stretched according to requirement. Further, the Polyline 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 FabricJS. After importing the library, we will create a canvas block in the body tag which will contain the Polyline. After this, we will initialize instances of Canvas and Polyline provided by FabricJS and change the background color of canvas Polyline using backgroundColor property and render on the Canvas as given in the example below.

Syntax:

var polyline = new fabric.Polyline(Points, {  
    backgroundColor: string
});  

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

  • backgroundColor: It specifies the background color.

The below example illustrates the backgroundColor property in Fabric.js:



Example:

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<!DOCTYPE html> 
<html
  
<head
    <!-- Loading the FabricJS library -->
    <script src
    </script
</head
  
<body
    <div style="text-align: center;width: 600px;"
        <h1 style="color: green;"
            GeeksforGeeks 
        </h1
  
        <b
            Fabric.js | Polyline backgroundColor Property 
        </b
    </div
  
    <canvas id="canvas"
            width="600"
            height="200"
            style="border:1px solid #000000;"
    </canvas
  
    <script
  
        // Initiate a Canvas instance 
        var canvas = new fabric.Canvas("canvas"); 
  
        // Initiate a polyline instance 
        var polyline = new fabric.Polyline([ 
        { x: 200, 
            y: 10 }, 
        {x: 250, 
            y: 50 
        }, { 
            x: 250, 
            y: 180 
        }, { 
            x: 150, 
            y: 180 
        }, { 
            x: 150, 
            y: 50 
        }, { 
            x: 200, 
            y: 10 }], { 
            backgroundColor: 'green' 
        }); 
  
        // Render the polyline in canvas 
        canvas.add(polyline); 
    </script
</body
  
</html>

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Output:

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