Converts lbs to kgs
// ==UserScript==
// @name Reddit Unit Converter
// @version 0.5.2
// @description Converts lbs to kgs
// @author Mario O.M.
// @namespace https://github.com/marioortizmanero/RedditLbsToKgsConverter
// @match *://*.reddit.com/*
// @grant none
// ==/UserScript==
(function() {
/*
* You can change the match tag at the top to something like '*://*.reddit.com/r/Brogress/*' to
* only use it on your preferred subreddits. Just keep adding new match tags for every
* subreddit you want to use it on.
*
* Change 'round' below to 'true' if you prefer a double decimal result like '25.83'
* instead of '26'.
*
* Change 'reverseConverter' to 'true' if you want to convert from kgs to lbs instead.
*
* Change 'updateForRES' to 'true' if you want the auto-scroll feature from RES to work.
* (titles won't get updated in RES with the automatic page loads). This feature is disabled
* by default because it consumes resources and has issues with other extensions like Imagus.
*/
'use strict';
const reverseConverter = false;
const round = false;
const updateForRES = false;
const lbsToKgRegex = /(\d*\.?\d+)\s?(lbs?|pounds?)/gi;
const kgToLbsRegex = /(\d*\.?\d+)\s?(kgs?|kilograms?)/gi;
const lbsToKgsConst = 2.205;
var convertUnits = function () {
var comments = document.querySelectorAll("p");
var titles = document.querySelectorAll("h2");
// Modifies the numbers and units
function lbsToKg(match,p1,p2) {
let unit = "kg";
let num = round ? Math.round(p1/lbsToKgsConst*100)/100 : Math.round(p1/lbsToKgsConst);
return [num, unit].join("");
}
function kgToLbs(match,p1,p2) {
let unit = "lbs";
let num = round ? Math.round(p1*lbsToKgsConst*100)/100 : Math.round(p1*lbsToKgsConst);
return [num, unit].join("");
}
// Regex expressions:
for (let i=0;i<titles.length; i++) {
if(reverseConverter) {
titles[i].innerHTML = titles[i].innerHTML.replace(kgToLbsRegex, kgToLbs);
} else {
titles[i].innerHTML = titles[i].innerHTML.replace(lbsToKgRegex, lbsToKg);
}
}
for (let i=0;i<comments.length; i++) {
if(reverseConverter) {
comments[i].innerHTML = comments[i].innerHTML.replace(kgToLbsRegex, kgToLbs);
} else {
comments[i].innerHTML = comments[i].innerHTML.replace(lbsToKgRegex, lbsToKg);
}
}
}
convertUnits();
if (updateForRES) {
// Updater for RES
var updater = function () {
if (!updater.timer) {
updater.timer = window.setTimeout(function () {
convertUnits();
updater.timer = false;
}, 500);
}
};
new MutationObserver(updater)
.observe(document.getElementById("siteTable"), { subtree: true, attributes: true, characterData:true });
}
})();