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Fabric.js Image height Property

  • Last Updated : 31 Aug, 2020

Fabric.js is a JavaScript library that is used to work with canvas. The canvas image is one of the class of fabric.js that is used to create image instances. The canvas image means the Image is movable and can be stretched according to requirement. The height property of the image is used to set the height of the image.

Approach: First import the fabric.js library. After importing the library, create a canvas block in the body tag which will contain the image. After this, initialize an instance of Canvas and image class provided by Fabric.JS and use the height property to set the height of the canvas image. After this render the image on the canvas.

Syntax:

fabric.Image(image, {
     height : Number
});

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

  • image: This parameter takes the image-element.
  • height: This parameter takes a number to set the height of the canvas image.

Example: This example uses FabricJS to set the height of the canvas image as shown in the below example.



HTML




<!DOCTYPE html>
<html>
  
<head>
    <!-- Adding the FabricJS library -->
    <script src=
    </script>
</head>
  
<body>
    <h1 style="color: green;">
        GeeksforGeeks
    </h1>
  
    <b>
        Fabric.js | Image height Property
    </b>
      
    <canvas id="canvas" width="400" height="300" 
        style="border:2px solid #000000">
    </canvas>
  
    <img src=
        width="100" height="100" id="my-image" 
        style="display: none;">
    <br>
  
    <button onclick="height()">Clickme</button>
  
    <script>
  
        // Creating the instance of canvas object
        var canvas = new fabric.Canvas("canvas");
  
        // Getting the image
        var img = document.getElementById('my-image');
  
        // Creating the image instance 
        var imgInstance = new fabric.Image(img, {
        });
  
        function height() {
            imgInstance = new fabric.Image(img, {
                height: 100
            });
            canvas.clear();
  
            // Rendering the image to canvas
            canvas.add(imgInstance);
  
            canvas.centerObject(imgInstance);
        }
        canvas.add(imgInstance);
        canvas.centerObject(imgInstance);
    </script>
</body>
  
</html>

Output:

  • Before clicking the button:

  • After clicking the button:




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