在浏览网页的时候，发现有的网页没有直达最前这样的功能，所有心血来潮利用ChatGPT写了一个油猴脚本以实现此功能，在网站上出现一个可以自由拖动的滑块。
声明：引用或二创需注明出处。
如图：
点击即可直达当前网页最前、中间、最后。
可以任意在网页上推动，点击小齿轮有简单的设置。
感觉可以在优化一下，直接发布脚本了。
脚本在此，可以复制自己用哟：
javascript
// ==UserScript==
// @name 滚动助手（优化版）
// @namespace https://github.com/yourname/scroll-helper
// @version 1.0
// @description 支持快捷滚动、自定义热键、图标拖动、暗色模式、图形化设置中心，适配所有网页
// @author GPT、依旧天真无邪
// @match *://*/*
// @require https://unpkg.com/sweetalert2@10.16.6/dist/sweetalert2.all.min.js
// @grant none
// ==/UserScript==
(function () {
'use strict';
const defaultConfig = {
scrollKeys: { top: 'ArrowUp', bottom: 'ArrowDown' },
autoShow: true,
iconSize: 18,
iconGap: 8,
borderRadius: 12,
panelOpacity: 60,
iconPos: { right: 30, bottom: 100 },
darkMode: false,
keyEnabled: true
};
const storageKey = 'ScrollHelperConfig';
const config = Object.assign({}, defaultConfig, JSON.parse(localStorage.getItem(storageKey) || '{}'));
const isDark = config.darkMode || window.matchMedia('(prefers-color-scheme: dark)').matches;
const Util = {
saveConfig() {
localStorage.setItem(storageKey, JSON.stringify(config));
},
createBtn(id, label, title, onClick) {
const btn = document.createElement('button');
btn.id = id;
btn.textContent = label;
btn.title = title;
Object.assign(btn.style, {
all: 'unset',
fontSize: `${config.iconSize}px`,
padding: '6px',
borderRadius: `${config.borderRadius}px`,
background: isDark ? '#444' : '#007BFF',
color: '#fff',
cursor: 'pointer',
boxShadow: '0 1px 4px rgba(0,0,0,0.2)',
textAlign: 'center',
transition: 'transform 0.2s'
});
btn.onmouseover = () => btn.style.transform = 'scale(1.1)';
btn.onmouseout = () => btn.style.transform = 'scale(1.0)';
btn.onmousedown = () => btn.style.transform = 'scale(0.9)';
btn.onmouseup = () => btn.style.transform = 'scale(1.1)';
btn.onclick = onClick;
return btn;
},
limitToViewport(pos) {
const w = window.innerWidth;
const h = window.innerHeight;
pos.right = Math.min(Math.max(0, pos.right), w - 50);
pos.bottom = Math.min(Math.max(0, pos.bottom), h - 50);
return pos;
}
};
const UI = {
panel: null,
createPanel() {
const panel = document.createElement('div');
panel.id = 'scroll-helper-panel';
Object.assign(panel.style, {
position: 'fixed',
right: `${config.iconPos.right}px`,
bottom: `${config.iconPos.bottom}px`,
display: 'flex',
flexDirection: 'column',
gap: `${config.iconGap}px`,
zIndex: 99999,
opacity: config.panelOpacity / 100,
cursor: 'move'
});
this.panel = panel;
const buttons = [
Util.createBtn('scroll-top', '⬆️', '返回顶部', () => window.scrollTo({ top: 0, behavior: 'smooth' })),
Util.createBtn('scroll-mid', '↕️', '滚动中部', () => window.scrollTo({ top: (document.body.scrollHeight - window.innerHeight) / 2, behavior: 'smooth' })),
Util.createBtn('scroll-bottom', '⬇️', '滚动到底', () => window.scrollTo({ top: document.body.scrollHeight, behavior: 'smooth' })),
Util.createBtn('scroll-settings', '⚙️', '设置中心', UI.openSettings)
];
buttons.forEach(btn => panel.appendChild(btn));
document.body.appendChild(panel);
this.enableDrag();
},
enableDrag() {
let isDragging = false, startX, startY;
this.panel.addEventListener('mousedown', (e) => {
isDragging = true;
startX = e.clientX;
startY = e.clientY;
e.preventDefault();
});
window.addEventListener('mousemove', (e) => {
if (!isDragging) return;
const dx = e.clientX - startX;
const dy = e.clientY - startY;
config.iconPos.right -= dx;
config.iconPos.bottom -= dy;
Util.limitToViewport(config.iconPos);
this.panel.style.right = `${config.iconPos.right}px`;
this.panel.style.bottom = `${config.iconPos.bottom}px`;
startX = e.clientX;
startY = e.clientY;
});
window.addEventListener('mouseup', () => {
if (isDragging) {
isDragging = false;
Util.saveConfig();
}
});
},
openSettings() {
const html = `
<div style="text-align:left">
<label>图标大小：
<input type="number" id="set-iconSize" value="${config.iconSize}" style="width:60px">
</label><br><br>
<label>圆角半径：
<input type="number" id="set-radius" value="${config.borderRadius}" style="width:60px">
</label><br><br>
<label>透明度(%)：
<input type="number" id="set-opacity" value="${config.panelOpacity}" style="width:60px">
</label><br><br>
<label><input type="checkbox" id="set-autoShow" ${config.autoShow ? 'checked' : ''}> 自动显示滚动按钮</label><br><br>
<label><input type="checkbox" id="set-keyEnabled" ${config.keyEnabled ? 'checked' : ''}> 启用快捷键 Ctrl+↑↓</label><br><br>
<label><input type="checkbox" id="set-darkMode" ${config.darkMode ? 'checked' : ''}> 暗色模式</label>
</div>`;
Swal.fire({
title: '滚动助手设置',
html,
confirmButtonText: '保存设置',
showCancelButton: true,
preConfirm: () => {
config.iconSize = parseInt(document.getElementById('set-iconSize').value);
config.borderRadius = parseInt(document.getElementById('set-radius').value);
config.panelOpacity = parseInt(document.getElementById('set-opacity').value);
config.autoShow = document.getElementById('set-autoShow').checked;
config.keyEnabled = document.getElementById('set-keyEnabled').checked;
config.darkMode = document.getElementById('set-darkMode').checked;
Util.saveConfig();
}
}).then(res => {
if (res.isConfirmed) {
location.reload(); // 刷新页面以应用新设置
}
});
},
handleScrollDisplay() {
if (!config.autoShow) {
this.panel.style.display = 'flex';
return;
}
window.addEventListener('scroll', () => {
if (window.scrollY > 200) {
this.panel.style.display = 'flex';
} else {
this.panel.style.display = 'none';
}
});
}
};
const Shortcut = {
init() {
if (!config.keyEnabled) return;
document.addEventListener('keydown', (e) => {
if (e.ctrlKey && e.key === config.scrollKeys.top) {
window.scrollTo({ top: 0, behavior: 'smooth' });
}
if (e.ctrlKey && e.key === config.scrollKeys.bottom) {
window.scrollTo({ top: document.body.scrollHeight, behavior: 'smooth' });
}
});
}
};
function init() {
UI.createPanel();
UI.handleScrollDisplay();
Shortcut.init();
}
if (document.readyState === 'complete' || document.body) {
init();
} else {
window.addEventListener('DOMContentLoaded', init);
}
})();