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Fabric.js Path borderOpacityWhenMoving Property

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  • Last Updated : 25 Jan, 2021

In this article, we are going to see how to set the borderOpacityWhenMoving 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 border of moving canvas Path using borderOpacityWhenMoving property.


fabric.Path('path', {
   borderOpacityWhenMoving: Number;

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

  • borderOpacityWhenMoving: It specifies the opacity of the border when moving.

Below examples illustrate the use of Fabric.js Path borderOpacityWhenMoving property in JavaScript.



<!DOCTYPE html> 
  <!-- FabricJS CDN -->
  <script src
  <div style="text-align: center;width: 600px;"
    <h1 style="color: green;"
      Fabric.js | Path borderOpacityWhenMoving Property 
  <div style="text-align: center;"
    <canvas id="canvas" width="600" height="400"
      style="border:1px solid green;"
    // Initiate a Canvas instance 
    var canvas = new fabric.Canvas("canvas"); 
    var geek = new fabric.Path('M 0 0 L 300 100 L 200 300 z', {
      fill: 'green',
      borderOpacityWhenMoving: 0


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