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How to create canvas line using Fabric.js ?

  • Last Updated : 16 Jul, 2021

In this article, we are going to see how to create a canvas line using FabricJS. The canvas line means the line is movable and can be stretched according to your requirements. Further, the line can be customized when it comes to initial stroke color and its starting and ending coordinates.
Approach: 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 our line. After this, we will initialize instances of Canvas and Line provided by FabricJS and render the Line instance on the Canvas instance as given in the example below.
Syntax: 
 

fabric.Line(points, options); 

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

  • points: It specifies the starting and ending coordinates of the line which are in the sequence like start x-coordinate, start y-coordinate, end x-coordinate and end y-coordinate.
  • options: It specifies the additional options to be applied.

Example: We can use FabricJS to create simple editable canvas line.
 

html




<!DOCTYPE html>
<html>
  
<head>
    <title>
        How to create canvas
        line using Fabric.js?
    </title>
     
    <!-- Loading the FabricJS library -->
    <script src=
    </script>
</head>
  
<body>
    <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 line instance
        var line = new fabric.Line([50, 10, 200, 150], {
            stroke: 'green'
        });
  
        // Render the rectangle in canvas
        canvas.add(line);
    </script>
</body>
 
</html>





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