Reddit "Hot Story" and "Best Comments" algorithms in JavaScript

reddit-scripts.js

//Based off of https://medium.com/hacking-and-gonzo/how-reddit-ranking-algorithms-work-ef111e33d0d9

function hotStory(ups, downs,date){
    const score = ups - downs;
    const order = Math.log(Math.max(Math.abs(score), 1), 10);
    const sign = score > 0 ? 1 : ((score < 0) ? -1 : 0);
    const seconds = (date.getTime()/1000) - 1134028003;
    return Math.round(sign * order + seconds / 45000, 7);
}

function bestComment(ups, downs){
   const n = ups + downs;
    if (n == 0){
        return 0;
    }
    const z = 1.281551565545;
    const p = ups / n;

    const left = p + 1/(2*n)*z*z;
    const right = z* Math.sqrt(p * (1-p) / n + z * z / ( 4 * n * n ));
    const under = 1+1/n*z*z;

    return (left - right) / under;
}

Thanks for sharing! One minor tweak:
const order = Math.log(Math.max(Math.abs(score), 1), 10);
should be:
const order = Math.log10(Math.max(Math.abs(score), 1));