Fabric.js Textbox linethrough Property

Last Updated : 22 Jan, 2021

In this article, we are going to see how to add a line through a canvas Textbox using linethrough property in FabricJS. The canvas means Textbox written is movable and can be stretched, resized and rotated according to requirements. Further, the text itself cannot be edited like a textbox.

Approach:

To make it possible we are going to use a JavaScript library called FabricJS.
After importing the library using CDN, we will create a canvas block in the body tag which will contain our Textbox.
After this, we will initialize instances of Canvas and Textbox provided by FabricJS and use the linethrough property to add a linethrough and render the Canvas on the Textbox as given in the example below.

Syntax:

fabric.Textbox('text', {
    linethrough: boolean
});

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

linethrough: It is a Boolean value that specifies whether to enable or disable the linethrough text decoration, disabled by default.

Example: We will use FabricJS to add linethrough to the text in the textbox canvas as shown below

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
   <!-- Adding the FabricJS library -->
   <script src= 
"https://cdnjs.cloudflare.com/ajax/libs/fabric.js/3.6.2/fabric.min.js"> 
   </script> 
</head> 
  
<body> 
   <h1 style="color: green;"> 
      GeeksforGeeks 
   </h1> 
  
   <h3> 
      Fabric.js | Textbox linethrough Property 
   </h3> 
  
   <canvas id="canvas" width="600" height="300" 
      style="border:1px solid #000000"> 
   </canvas> 
  
   <script> 
      // Initiate a Canvas instance  
      var canvas = new fabric.Canvas("canvas"); 
  
      // Create a new Textbox instance  
      var text = new fabric.Textbox( 
         'A Computer Science Portal', { 
         width: 500, 
         linethrough: true 
      }); 
  
      // Render the Textbox in canvas  
      canvas.add(text); 
      canvas.centerObject(text); 
   </script> 
</body> 
  
</html>