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Fabric.js | Triangle strokeDashOffset Property

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  • Last Updated : 27 May, 2020
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In this article, we are going to see how to set the stroke offset to the canvas triangle using FabricJS. The canvas triangle means the triangle is movable and can be stretched according to requirement. Further, the triangle 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 that will contain the triangle. After this, we will initialize instances of Canvas and Triangle provided by FabricJS and create a stroke using stroke property and further use the strokeDashOffset property to add stroke offset and render the Canvas on the Triangle as given in the below example.


    width: number,
    height: number,
    strokeDashOffset: number, 
    stroke: string

Parameters: This function accepts three parameters as mentioned above and described below:

  • width: It specifies the width of triangle.
  • height: It specifies the height of triangle.
  • strokeDashOffset: It specifies the amount of offset of stroke.
  • stroke: It specifies the stroke color.

Example: This example uses FabricJS to set the stroke offset to the canvas triangle as given below.

<!DOCTYPE html> 
        Fabric.js | Triangle strokeDashOffset Property
    <!-- Adding the FabricJS library -->
    <script src= 
      <h1 style="color: green;">
        Fabric.js | Triangle strokeDashOffset Property
    <canvas id="canvas" width="600" height="300"
        style="border:1px solid #000000"
        // Initiate a Canvas instance 
        var canvas = new fabric.Canvas("canvas"); 
        // Initiate a triangle instance 
        var triangle = new fabric.Triangle({
            width: 300,
            height: 150,
            fill: '',
            stroke: 'green',
            strokeWidth: 3,
            strokeDashArray: [10],
            strokeDashOffset: 5
        // Render the Triangle in canvas 


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