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Scroll to Bottom and Top Button

Add buttons to scroll to the bottom and top of the website

当前为 2025-03-12 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Scroll to Bottom and Top Button
  3. // @name:zh      底部和顶部按钮
  4. // @namespace    https://greasyfork.org/
  5. // @version      0.8
  6. // @description  Add buttons to scroll to the bottom and top of the website
  7. // @description:zh
  8. // @author       ghzxs
  9. // @match        *://*/*
  10. // @license     MIT
  11. // @grant        none
  12. // ==/UserScript==
  13.  
  14. (function() {
  15.     'use strict';
  16.  
  17.     // Base64-encoded SVG data for bottom icon
  18.     const base64BottomIcon = 'PHN2ZyBzdHJva2U9ImN1cnJlbnRDb2xvciIgZmlsbD0ibm9uZSIgc3Ryb2tlLXdpZHRoPSIyIiB2aWV3Qm94PSIwIDAgMjQgMjQiIHN0cm9rZS1saW5lY2FwPSJyb3VuZCIgc3Ryb2tlLWxpbmVqb2luPSJyb3VuZCIgY2xhc3M9Imljb24tc20gbS0xIiBoZWlnaHQ9IjFlbSIgd2lkdGg9IjFlbSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48bGluZSB4MT0iMTIiIHkxPSI1IiB4Mj0iMTIiIHkyPSIxOSI+PC9saW5lPjxwb2x5bGluZSBwb2ludHM9IjE5IDEyIDEyIDE5IDUgMTIiPjwvcG9seWxpbmU+PC9zdmc+';
  19.  
  20.     // Base64-encoded SVG data for top icon
  21.     const base64TopIcon = 'PHN2ZyBzdHJva2U9ImN1cnJlbnRDb2xvciIgZmlsbD0ibm9uZSIgc3Ryb2tlLXdpZHRoPSIyIiB2aWV3Qm94PSIwIDAgMjQgMjQiIHN0cm9rZS1saW5lY2FwPSJyb3VuZCIgc3Ryb2tlLWxpbmVqb2luPSJyb3VuZCIgY2xhc3M9Imljb24tc20gbS0xIiBoZWlnaHQ9IjFlbSIgd2lkdGg9IjFlbSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48bGluZSB4MT0iMTIiIHkxPSIxOSIgeDI9IjEyIiB5Mj0iNSI+PC9saW5lPjxwb2x5bGluZSBwb2ludHM9IjUgMTIgMTIgNSAxOSAxMiI+PC9wb2x5bGluZT48L3N2Zz4=';
  22.  
  23.     // Create the bottom button
  24.     const bottomButton = document.createElement('button');
  25.     const bottomImg = document.createElement('img');
  26.     bottomImg.src = `data:image/svg+xml;base64,${base64BottomIcon}`;
  27.     bottomImg.alt = 'Scroll to Bottom';
  28.     bottomImg.style.width = '16px';
  29.     bottomImg.style.height = '16px';
  30.     bottomImg.style.display = 'block';
  31.     bottomButton.appendChild(bottomImg);
  32.  
  33.     // Apply styles to the bottom button
  34.     bottomButton.style.position = 'fixed';
  35.     bottomButton.style.bottom = '14px';
  36.     bottomButton.style.right = '14px';
  37.     bottomButton.style.zIndex = '1';
  38.     bottomButton.style.backgroundColor = 'none';
  39.     bottomButton.style.border = '0.5px solid transparent';
  40.     bottomButton.style.borderRadius = '50%';
  41.     bottomButton.style.padding = '4px';
  42.     bottomButton.style.cursor = 'pointer';
  43.     bottomButton.style.display = 'flex';
  44.     bottomButton.style.alignItems = 'center';
  45.     bottomButton.style.justifyContent = 'center';
  46.  
  47.     // Add click event listener to scroll to the bottom
  48.     bottomButton.addEventListener('click', function() {
  49.         window.scrollTo({
  50.             top: document.body.scrollHeight,
  51.             behavior: 'smooth'
  52.         });
  53.     });
  54.  
  55.     // Append the bottom button to the body
  56.     document.body.appendChild(bottomButton);
  57.  
  58.     // Create the top button
  59.     const topButton = document.createElement('button');
  60.     const topImg = document.createElement('img');
  61.     topImg.src = `data:image/svg+xml;base64,${base64TopIcon}`;
  62.     topImg.alt = 'Scroll to Top';
  63.     topImg.style.width = '16px';
  64.     topImg.style.height = '16px';
  65.     topImg.style.display = 'block';
  66.     topButton.appendChild(topImg);
  67.  
  68.     // Apply styles to the top button
  69.     topButton.style.position = 'fixed';
  70.     topButton.style.bottom = '50px';
  71.     topButton.style.right = '14px';
  72.     topButton.style.zIndex = '1';
  73.     topButton.style.backgroundColor = 'none';
  74.     topButton.style.border = '0.5px solid transparent';
  75.     topButton.style.borderRadius = '50%';
  76.     topButton.style.padding = '4px';
  77.     topButton.style.cursor = 'pointer';
  78.     topButton.style.display = 'flex';
  79.     topButton.style.alignItems = 'center';
  80.     topButton.style.justifyContent = 'center';
  81.  
  82.     // Add click event listener to scroll to the top
  83.     topButton.addEventListener('click', function() {
  84.         window.scrollTo({
  85.             top: 0,
  86.             behavior: 'smooth'
  87.         });
  88.     });
  89.  
  90.     // Append the top button to the body
  91.     document.body.appendChild(topButton);
  92.  
  93.     // Function to toggle the visibility of the top button
  94.     function toggleTopButton() {
  95.         if (window.scrollY === 0) {
  96.             topButton.style.display = 'none';
  97.         } else {
  98.             topButton.style.display = 'flex';
  99.         }
  100.     }
  101.  
  102.     // Initial check
  103.     toggleTopButton();
  104.  
  105.     // Add scroll event listener to toggle the top button
  106.     window.addEventListener('scroll', toggleTopButton);
  107. })();