bogleheads-relative-time.userscript

// ==UserScript==
// @name         bogleheads-relative-time
// @namespace    http://tampermonkey.net/
// @version      2024-04-15
// @description  try to take over the world!
// @author       You
// @match        https://www.bogleheads.org/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=bogleheads.org
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
function convertToRelativeTime() {
    var elements = document.getElementsByTagName("time");

    for (var i = 0; i < elements.length; i++) {
        var element = elements[i];
        var datetime = new Date(element.getAttribute("datetime"));
        var currentTime = new Date();

        var timeDiff = currentTime - datetime;
        var seconds = Math.floor(timeDiff / 1000);
        var minutes = Math.floor(seconds / 60);
        var hours = Math.floor(minutes / 60);
        var days = Math.floor(hours / 24);
        var months = Math.floor(days / 30);
        var years = Math.floor(months / 12);

        var relativeTime;
        if (years > 0) {
            relativeTime = years + " year" + (years > 1 ? "s" : "") + " ago";
        } else if (months > 0) {
            relativeTime = months + " month" + (months > 1 ? "s" : "") + " ago";
        } else if (days > 0) {
            relativeTime = days + " day" + (days > 1 ? "s" : "") + " ago";
        } else if (hours > 0) {
            relativeTime = hours + " hour" + (hours > 1 ? "s" : "") + " ago";
        } else if (minutes > 0) {
            relativeTime = minutes + " minute" + (minutes > 1 ? "s" : "") + " ago";
        } else {
            relativeTime = "just now";
        }

        element.textContent = relativeTime;
    }
}
convertToRelativeTime();

})();