Converting an image to a byte array in JavaScript

Does anyone know how to manipulate binary files in Javascript similar to C? I'm currently facing a critical scenario where I need to create a flipped image. Unfortunately, I don't have access to CSS, canvas, HTML, or the DOM - so I need to accomplish this using only Javascript. If there's a way to load an image into a byte array, I could iterate through each byte and generate a new image. Is it even possible to achieve this?

Thank you in advance!

Answer №1

In the case of Yahoo! Widgets, there is a separate matter to consider. The Canvas class provides the ability to import an image using 'drawImage()', and you can apply scale with negative figures to reverse the image. For further details, please consult the documentation available in the Canvas reference manual.

Answer №2

const request = new XMLHttpRequest;
request.open("GET", "/images/something.png", true);
request.responseType = "arraybuffer";
request.onload = function () {
    let imageData;
    imageData = new Uint8Array(request.response || request.mozResponseArrayBuffer);
};

This approach may encounter issues on the current version of Internet Explorer, posing uncertainty on how a widget would manage it. Nevertheless, it facilitates the process of reading a PNG file into a byte array.

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