How to display an image stored as a byte array in HTML and JavaScript?

To display an image stored as a byte array in HTML and JavaScript, you can use the Blob object along with the URL.createObjectURL() method.

Assuming you have a byte array representing the image data, you can convert it to a Blob object and create a URL for it.

Then you can set this URL as the src attribute of an <img> element.

HTML:

<!DOCTYPE html>
<html>
<head>
    <title>Display Image from Byte Array</title>
</head>
<body>
    <img id="image" alt="Image">
    
    <script>
        // Example byte array representing an image (replace this with your byte array)
        const byteArray = [255, 216, 255, 224, 0, 16, 74, 70, ...];

        // Convert the byte array to a Blob
        const blob = new Blob([new Uint8Array(byteArray)], { type: 'image/jpeg' });

        // Create a URL for the Blob
        const imageUrl = URL.createObjectURL(blob);

        // Get the img element
        const imgElement = document.getElementById('image');

        // Set the src attribute of the img element to the URL
        imgElement.src = imageUrl;
    </script>
</body>
</html>

In this example, we replace the byteArray variable with your actual byte array representing the image data.

We create a Blob object from the byte array using new Blob([new Uint8Array(byteArray)], { type: 'image/jpeg' }).

Adjust the type parameter according to the type of image you have (e.g., 'image/jpeg', 'image/png', etc.).

We create a URL for the Blob using URL.createObjectURL(blob).

We set the src attribute of the <img> element to the created URL.

This will display the image in the <img> element on the webpage.