Google Forms automatic fill based on probability

var probs = [
    [0.5, 0.5],
    [0.7, 0.2, 0.1],
    [0.2, 0.5, 0.1, 0.2],
    [[0, 0.3], [0.1, 0.6], 0, [0.5, 1]]
];

(function(e, s) {
    e.src = s;
    e.onload = function() {
        let tosend = {};
        FB_PUBLIC_LOAD_DATA_[1][1].forEach(function(q, qidx) {
            let id = q[4][0][0];
            let ans = "";
            let s = 0.0;
            let r = Math.random();
            console.log(">>>>>>>>>>>> " + Number(r).toFixed(2) + " for " + id + ": " + q[1]);
            if (q[3] == 2) {
                let aidx = -1;
                r *= probs[qidx].reduce((total, val) => total + val, 0);
                q[4][0][1].some(function(choice, ai) {
                    let prob = probs[qidx][ai];
                    aidx++;
                    if (r >= s && r < (s + prob))
                        return true;
                    s += prob;
                });
                let answer = q[4][0][1][aidx][0];
                tosend["entry." + id] = answer;
                console.log(aidx + " / " + answer + " with " + probs[qidx][aidx]);
            } else if (q[3] == 4) {
                tosend["entry." + id] = [];
                q[4][0][1].forEach(function(choice, ai) {
                    let prob = probs[qidx][ai];
                    if (prob === 0)
                        return;
                    if (r >= prob[0] && r <= prob[1])
                        tosend["entry." + id].push(q[4][0][1][ai][0]);
                });
                tosend["entry." + id].forEach(function(a, ai) {
                    let prob = probs[qidx][ai];
                    console.log(ai + " / " + a + " with " + prob[0] + " - " + prob[1]);
                })
            } else {
                console.log("Unsupported question type " + q[3] + " for " + q[1]);
            }
        });
        jQuery.ajax({
            type: "POST",
            url: FB_PUBLIC_LOAD_DATA_[2] + "/d/" + FB_PUBLIC_LOAD_DATA_[14] + "/formResponse",
            data: tosend,
            traditional: true,
            cache: false
        });
    };
    document.head.appendChild(e);
})(document.createElement('script'), '//code.jquery.com/jquery-latest.min.js');