JavaScript Uint8Array Hacks and Cheat Codes

This page will serve as a landing pad of JavaScript Uint8Arrays hacks. Not all of the functions are my own, and proper attribution is given when necessary. I mostly use

Two useful functions from NfWebCrypto for converting Uint8Arrays to Strings, and Strings to Uint8Arrays:

    text2ua:function(s) {
        var ua = new Uint8Array(s.length);
        for (var i = 0; i < s.length; i++) {
            ua[i] = s.charCodeAt(i);
        }
        return ua;
    },

    ua2text:function(ua) {
        var s = '';
        for (var i = 0; i < ua.length; i++) {
            s += String.fromCharCode(ua[i]);
        }
        return s;
    },

My own function for converting Uint8Arrays to hex:

    ua2hex:function(ua) {
        var h = '';
        for (var i = 0; i < ua.length; i++) {
            h += "\\0x" + ua[i].toString(16);
        }
        return h;
    },

ArrayBuffer concatenation I wrote and later found on StackOverflow:

    var catArray = new Uint8Array(arrayONE.byteLength+arrayTWO.byteLength);
    catArray.set(new Uint8Array(arrayONE),0);
    catArray.set(new Uint8Array(arrayTWO), arrayONE.byteLength);

Another useful function to convert a Uint8Array to a Base64-encoded string from StackOverflow:

    var ua2b64 = btoa(String.fromCharCode.apply(null, yourUint8Array));
    var b642ua = new Uint8Array(atob(yourBase64EncodedString).split("").map(function(c) {
    return c.charCodeAt(0); }));

That's all for now. I hope these functions help you as much as they have helped me!