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Fabric.js Itext borderOpacityWhenMoving Property

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  • Last Updated : 05 Feb, 2021

In this article we will be using borderOpacityWhenMoving property that is used to set the opacity of the border while moving in a canvas Itext. Fabric.js is a JavaScript library that is used to work with canvas. The canvas Itext is one of the class of fabric.js that is used to create Itext instances. The canvas Itext means the Itext is movable and can be stretched according to requirement.

First import the fabric.js library. After importing the library, create a canvas block in the body tag which will contain the Itext. After this, initialize an instance of Canvas and Itext class provided by Fabric.JS and use the borderOpacityWhenMoving property to set the opacity of the border while moving.


fabric.Itext (Itext , {
            borderOpacityWhenMoving : number

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

  • borderOpacityWhenMoving : This parameter takes a number value.

Example: This example uses FabricJS to set the borderOpacityWhenMoving property of the canvas Itext as shown in the below example:


<!DOCTYPE html> 
  <!-- FabricJS CDN -->
  <script src
  <div style="text-align: center;width: 400px;"
    <h1 style="color: green;"
      Fabric.js | Itext borderOpacityWhenMoving  Property 
  <div style="text-align: center;"
    <canvas id="canvas" width="400" height="200"
      style="border:1px solid green;"
    var canvas = new fabric.Canvas("canvas"); 
    var geek = new fabric.IText('GeeksforGeeks', {
        borderOpacityWhenMoving  : 0.2


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