Hack The Valley Hash Cracker

hack.js

$('body').append('<div id="a"></div>');
START = 40;
INTERVAL = 5;
for (let i = START * 10000; i < (START + INTERVAL) * 10000; i++) {
    let hash = (i).toString(36);
    $('#inputHash').val(hash);
    if (i % 1000 == 0) {
        console.clear();
        console.count('x1000');
        console.log(i % 1000);
    }
    $.ajax({
        url: '/',
        type: "POST",
        dataType: 'json',
        contentType: "application/json",
        data: getFormData($("#hash_form")),
        success: function (result) {
            if (result["msg"] === "ok") {
                $('#a').append('<p>' + result["letter"] + ' - ' + hash + ' - ' + parseInt(hash, 36) + '</p>');
            }
            if (i == (START + INTERVAL) * 10000) { console.log("DONE"); }
        },
        error: function (result) {
            console.clear();
            if (i == (START + INTERVAL) * 10000) { console.log("DONE"); }
        }
    })
}