smiley

null.user.js

// ==UserScript==
// @name         Smiley Face Button
// @namespace    Violentmonkey Scripts
// @version      1
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    
    // Create the smiley face button element
    var smileyButton = document.createElement('button');
    smileyButton.style.position = 'fixed';
    smileyButton.style.top = '10px';
    smileyButton.style.right = '10px';
    smileyButton.style.fontSize = '60px';
    smileyButton.innerHTML = '😀';
    
    // Add a click event listener to the smiley face button
    smileyButton.addEventListener('click', function() {
        alert('tee-hee');
    });

    // Append the smiley face button element to the body
    document.body.appendChild(smileyButton);
})();