hide_upvote_count.js

// ==UserScript==
// @name        Hide Upvote Count
// @description Hides upvote count on posts and comments on Reddit
// @match       *://*.reddit.com/*
// @version     0.0.0.0.1
// @developer   gosoccerboy5
// ==/UserScript==

(function() {
    'use strict';

    let style = document.createElement("style");
    style.innerText = "[id^=vote-arrows] div {min-width: 1.9vw;}.Post div div[id^=vote-arrows] div {text-align:center;}";
    document.head.append(style);

    function updateNode(node) {
        let updoots = node.innerText;
        let permanent = node.innerText = "Vote";
        let isPost = [...node.parentElement.parentElement.parentElement.classList].includes("Post");
        node.parentNode.addEventListener("mouseover", function(evt) {
            if (isPost && (evt.target === this || evt.target === this.children[1])) this.children[1].innerText = updoots;
        });
        node.parentNode.addEventListener("mouseout", function(evt) {
            if (isPost && (evt.target === this || evt.target === this.children[1])) this.children[1].innerText = permanent;
        });
        node.parentNode.addEventListener("click", function(evt) {
            permanent = node.innerText = updoots;
        });
    }

    let mut = new MutationObserver(function(mutationList) {
        for (let mutation of mutationList) {
            if (mutation.type === "childList") {
                mutation.addedNodes.forEach(node => {
                    node.querySelector && node.querySelector("[id*=vote-arrows] > div") &&
                        node.querySelectorAll("[id*=vote-arrows] > div").forEach(updateNode);
                });
            }
        }
    });

    mut.observe(document.body, {subtree: true, childList: true});

    window.addEventListener("load", () => document.body.querySelectorAll("[id*=vote-arrows] > div").forEach(updateNode));
})();