JavaScript Download (Save AS)

download_file_save_as.js

// https://stackoverflow.com/questions/23451726/saving-binary-data-as-file-using-javascript-from-a-browser
var sampleBytes = new Int8Array(4096);
var saveByteArray = (function () {
    var a = document.createElement("a");
    document.body.appendChild(a);
    a.style = "display: none";
    return function (data, name) {
        var blob = new Blob(data, {type: "octet/stream"}),
            url = window.URL.createObjectURL(blob);
        a.href = url;
        a.download = name;
        a.click();
        window.URL.revokeObjectURL(url);
    };
}());

saveByteArray(["sampleBytes"], 'example.txt');