Error 404 Button

Adds a button to trigger an "Error 404" page replacement.

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Error 404 Button
// @namespace    http://tampermonkey.net/
// @version      1.4
// @description  Adds a button to trigger an "Error 404" page replacement.
// @author       Game Dude
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // Create the button element
    const button = document.createElement('button');
    button.textContent = '◯';
    button.style.position = 'fixed';
    button.style.bottom = '20px';
    button.style.right = '20px';
    button.style.zIndex = '9999';
    button.style.padding = '10px 15px';
    button.style.border = 'none';
    button.style.borderRadius = '50%';
    button.style.backgroundColor = '#dc3545';
    button.style.color = '#fff';
    button.style.fontSize = '18px';
    button.style.cursor = 'pointer';
    button.style.boxShadow = '0 4px 6px rgba(0, 0, 0, 0.1)';

    // Add a hover effect
    button.addEventListener('mouseover', () => {
        button.style.backgroundColor = '#c82333';
    });
    button.addEventListener('mouseout', () => {
        button.style.backgroundColor = '#dc3545';
    });

    // Append the button to the document body
    document.body.appendChild(button);

    // Add a click event listener to the button
    button.addEventListener('click', () => {
        // Clear the body content
        while (document.body.firstChild) {
            document.body.removeChild(document.body.firstChild);
        }

        // Create a new style element for the page
        const style = document.createElement('style');
        style.textContent = `
            body {
                display: flex;
                justify-content: center;
                align-items: center;
                height: 100vh;
                margin: 0;
                font-family: Arial, sans-serif;
                color: #333;
                background-color: #f8f9fa;
            }
            h1 {
                font-size: 3rem;
                color: #dc3545;
            }
        `;
        document.head.appendChild(style);

        // Create and append the "Error 404" message
        const errorMessage = document.createElement('h1');
        errorMessage.textContent = 'Error 404: Page Not Found';
        document.body.appendChild(errorMessage);

        // Remove the button from memory
        button.remove();
    });
})();