滚动到顶/底、记录页面滚动、屏幕常亮和自动滚动
// ==UserScript==
// @name 网页随心滚
// @namespace http://tampermonkey.net/
// @version 2.1
// @description 滚动到顶/底、记录页面滚动、屏幕常亮和自动滚动
// @author ^o^
// @match *://*/*
// @grant GM_registerMenuCommand
// @run-at document-start
// ==/UserScript==
(function() {
'use strict';
let w = window, d = document;
let eScrollBtn = true, eWakeLock = true;
let scrollBtnPosition = localStorage.getItem('scrollBtnPosition') || 'right'; // 'left' or 'right'
// 注册菜单命令（已移除滚动条相关）
GM_registerMenuCommand('滚动到顶/底按钮：开/关', toggleScrollBtn);
GM_registerMenuCommand('滚动到顶/底按钮位置：左/右切换', toggleScrollBtnPosition);
GM_registerMenuCommand('保持屏幕常亮：开/关', toggleWakeLock);
GM_registerMenuCommand('自动滚动：开始/停止', toggleAutoScroll);
GM_registerMenuCommand('自动滚动：配置参数', () => {
let s = prompt('滚动间隔(ms):', speed);
if (s !== null) speed = parseInt(s) || speed;
let p = prompt('每次滚动像素(px):', pixels);
if (p !== null) pixels = parseInt(p) || pixels;
});
function toggleScrollBtn() {
eScrollBtn = !eScrollBtn;
let b = d.getElementById('scroll-top-btn');
if (b) b.remove();
if (eScrollBtn) initScrollBtn();
}
function toggleWakeLock() {
eWakeLock = !eWakeLock;
if (eWakeLock) requestWL();
else if (wakeLock) wakeLock.release();
}
function toggleScrollBtnPosition() {
scrollBtnPosition = scrollBtnPosition === 'left' ? 'right' : 'left';
localStorage.setItem('scrollBtnPosition', scrollBtnPosition);
let b = d.getElementById('scroll-top-btn');
if (b) {
b.style.left = scrollBtnPosition === 'left' ? '15px' : '';
b.style.right = scrollBtnPosition === 'right' ? '15px' : '';
}
}
function initScrollBtn() {
let b = d.createElement('button');
b.textContent = '▲';
b.id = 'scroll-top-btn';
Object.assign(b.style, {
position: 'fixed', bottom: '15%', zIndex: 999999,
width: '35px', height: '35px', borderRadius: '50%', padding: 0,
background: 'rgba(255,255,255,0.3)', backdropFilter: 'blur(5px)',
display: 'none',
fontSize: '16px', textAlign: 'center', lineHeight: '35px',
fontWeight: 'bold', cursor: 'pointer', transition: 'all 0.3s ease',
border: 'none'
});
// 根据位置设置 left 或 right
if (scrollBtnPosition === 'left') {
b.style.left = '13px';
} else {
b.style.right = '13px';
}
d.body.appendChild(b);
let lastY = w.pageYOffset, t;
w.addEventListener('scroll', () => {
b.textContent = w.scrollY > lastY ? '▼' : '▲';
lastY = w.scrollY;
b.style.display = w.pageYOffset > 100 ? 'block' : 'none';
clearTimeout(t);
t = setTimeout(() => b.style.display = 'none', 2000);
});
b.addEventListener('mouseenter', () => {
b.style.background = 'rgba(255,255,255,0.6)';
b.style.transform = 'scale(1.1)';
});
b.addEventListener('mouseleave', () => {
b.style.background = 'rgba(255,255,255,0.3)';
b.style.transform = 'scale(1)';
});
b.addEventListener('click', () => w.scrollTo({
top: b.textContent === '▲' ? 0 : d.documentElement.scrollHeight,
behavior: 'smooth'
}));
}
let wakeLock = null;
async function requestWL() {
if (!('wakeLock' in navigator)) return;
try {
wakeLock = await navigator.wakeLock.request("screen");
} catch (e) {}
}
eWakeLock && requestWL();
let scrolling = false, interval, speed = 25, pixels = 1;
function toggleAutoScroll() {
if (scrolling) {
scrolling = false;
clearInterval(interval);
} else {
scrolling = true;
interval = setInterval(() => {
w.scrollBy(0, pixels);
if (w.innerHeight + w.scrollY >= d.body.scrollHeight) {
w.scrollBy(0, 1);
}
}, speed);
}
}
eScrollBtn && initScrollBtn();
// 记录页面滚动位置
w.addEventListener('scroll', () => {
localStorage.setItem('pageScrollPosition', JSON.stringify({
top: w.scrollY,
left: w.scrollX
}));
});
// 页面加载时恢复滚动位置
w.addEventListener('load', () => {
let position = localStorage.getItem('pageScrollPosition');
if (position) {
let scrollPosition = JSON.parse(position);
w.scrollTo(scrollPosition.left, scrollPosition.top);
}
});
})();