I have this content script that downloads some binary data using XHR, which is sent later to the background script:  var self = this; var xhr = new XMLHttpRequest(); xhr.open('GET', url); xhr.responseType = 'arraybuffer'; xhr.onload =...
I've been playing around with Typed Arrays in JavaScript.  var buffer = new ArrayBuffer(16); var int32View = new Int32Array(buffer);   I imagine normal arrays ([1, 257, true]) in JavaScript have poor performance because their values could be of a...
I'm a bit confused with Javascript Typed Arrays.  What I have are several Float32Array s, that have no concat method. I don't know how many are them in advance, btw. I'd like to concatenate them all inside another Float32Array, but:   as...
I've come across a problem in that I don't see a way to easily convert strings to typed arrays, and converting from typed arrays to strings appears to be a real pain requiring a manual char code conversion for every byte. Is there any better...
I have been messing with Canvas a lot lately, developing some ideas I have for a web-based game. As such I've recently run into Javascript Typed Arrays. I've done some reading for example at MDN and I just can't understand anything I'...
I'm trying to use WebGL and would like to mix some different types into one buffer of bytes. I understand TypedArrays serve this purpose but it's not clear if I can mix types with them (OpenGL vertex data is often floats mixed with unsigned b...
Is there a way how to test if two JavaScript ArrayBuffers are equal? I would like to write test for message composing method. The only way I found is to convert the ArrayBuffer to string and then compare. Did I miss something?  Following code is givi...
So as an example, when I read the ? character (\u03C0) from a File using the FileReader API, I get the pi character back to me when I read it using FileReader.readAsText(blob) which is expected. But when I use FileReader.readAsBinaryString(blob), I g...
I am working on a web app that opens binary files and allows them to be edited.  This process is basically ondrop -> dataTransfer.files[0] -> FileReader -> Uint8Array  Essentially, I want to be able to save the modified file back as a binary...
How can I convert a Uint8ClampedArray (like one used for storing HTML5 canvas image data) to a regular array, in which values won't be constrained to 0-255?...

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