Tampermonkey code where changes everything to kelsondre every second (PASTE INTO TAMPERMONKEY)

// ==UserScript==
// @name         Forever KELSONDRE
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Change all text to "KELSONDRE,!!!!" every second with a stop button.
// @author       Kelsondre
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    let intervalId;

    // Function to replace text with "KELSONDRE,!!!!"
    function kelsondreEverything() {
        const allElements = document.querySelectorAll('*');
        allElements.forEach(el => {
            if (el.childNodes.length === 1 && el.childNodes[0].nodeType === 3) {
                el.childNodes[0].nodeValue = 'KELSONDRE,!!!!';
            }
        });
    }

    // Start replacing text every second
    function startKelsondre() {
        intervalId = setInterval(kelsondreEverything, 1000);
    }

    // Stop the madness
    function stopKelsondre() {
        clearInterval(intervalId);
        alert('KELSONDRE,!!!! has been stopped!');
    }

    // Create a floating stop button
    function createStopButton() {
        const button = document.createElement('button');
        button.innerText = '🛑 Stop KELSONDRE';
        button.style.position = 'fixed';
        button.style.top = '10px';
        button.style.right = '10px';
        button.style.zIndex = '9999';
        button.style.padding = '10px 20px';
        button.style.backgroundColor = '#ff4d4d';
        button.style.color = '#fff';
        button.style.border = 'none';
        button.style.borderRadius = '5px';
        button.style.cursor = 'pointer';
        button.style.fontSize = '14px';

        button.onclick = stopKelsondre;
        document.body.appendChild(button);
    }

    // Initialize
    createStopButton();
    startKelsondre();
})();