Display Real-Time Subscriber Count.
目前為
// ==UserScript==
// @name YouTube Enhancer (Real-Time Subscriber Count)
// @description Display Real-Time Subscriber Count.
// @icon https://raw.githubusercontent.com/exyezed/youtube-enhancer/refs/heads/main/extras/youtube-enhancer.png
// @version 1.4
// @author exyezed
// @namespace https://github.com/exyezed/youtube-enhancer/
// @supportURL https://github.com/exyezed/youtube-enhancer/issues
// @license MIT
// @match https://www.youtube.com/*
// @grant GM_xmlhttpRequest
// ==/UserScript==
(function() {
'use strict';
const OPTIONS = ['subscribers', 'views', 'videos'];
const FONT_LINK = "https://fonts.googleapis.com/css2?family=Rubik:wght@400;700&display=swap";
const STATS_API_URL = 'https://api.livecounts.io/youtube-live-subscriber-counter/stats/';
const DEFAULT_UPDATE_INTERVAL = 2000;
const DEFAULT_OVERLAY_OPACITY = 0.75;
let overlay = null;
let isUpdating = false;
let intervalId = null;
let currentChannelName = null;
let updateInterval = parseInt(localStorage.getItem('youtubeEnhancerInterval')) || DEFAULT_UPDATE_INTERVAL;
let overlayOpacity = parseFloat(localStorage.getItem('youtubeEnhancerOpacity')) || DEFAULT_OVERLAY_OPACITY;
const lastSuccessfulStats = new Map();
const previousStats = new Map();
let previousUrl = location.href;
let isChecking = false;
async function fetchChannel(url) {
if (isChecking) return null;
isChecking = true;
try {
const response = await fetch(url, {
credentials: 'same-origin'
});
if (!response.ok) return null;
const html = await response.text();
const match = html.match(/var ytInitialData = (.+?);<\/script>/);
return match && match[1] ? JSON.parse(match[1]) : null;
} catch (error) {
return null;
} finally {
isChecking = false;
}
}
async function getChannelInfo(url) {
const data = await fetchChannel(url);
if (!data) return null;
try {
const channelName = data?.metadata?.channelMetadataRenderer?.title || "Unknown";
const channelId = data?.metadata?.channelMetadataRenderer?.externalId || null;
return {channelName, channelId};
} catch (e) {
return null;
}
}
function isChannelPageUrl(url) {
return url.includes('youtube.com/') &&
(url.includes('/channel/') || url.includes('/@')) &&
!url.includes('/video/') &&
!url.includes('/watch');
}
function checkUrlChange() {
const currentUrl = location.href;
if (currentUrl !== previousUrl) {
previousUrl = currentUrl;
if (isChannelPageUrl(currentUrl)) {
setTimeout(() => getChannelInfo(currentUrl), 500);
}
}
}
history.pushState = (function(f) {
return function() {
f.apply(this, arguments);
checkUrlChange();
};
})(history.pushState);
history.replaceState = (function(f) {
return function() {
f.apply(this, arguments);
checkUrlChange();
};
})(history.replaceState);
window.addEventListener('popstate', checkUrlChange);
setInterval(checkUrlChange, 1000);
function init() {
loadFonts();
initializeLocalStorage();
addStyles();
observePageChanges();
addNavigationListener();
if (isChannelPageUrl(location.href)) {
getChannelInfo(location.href);
}
}
function loadFonts() {
const fontLink = document.createElement("link");
fontLink.rel = "stylesheet";
fontLink.href = FONT_LINK;
document.head.appendChild(fontLink);
}
function initializeLocalStorage() {
OPTIONS.forEach(option => {
if (localStorage.getItem(`show-${option}`) === null) {
localStorage.setItem(`show-${option}`, 'true');
}
});
}
function addStyles() {
const style = document.createElement('style');
style.textContent = `
.settings-button {
position: absolute;
top: 12px;
right: 12px;
width: 16px;
height: 16px;
cursor: pointer;
z-index: 2;
transition: transform 0.3s ease;
}
.settings-button:hover {
transform: rotate(45deg);
}
.settings-menu {
position: absolute;
top: 35px;
right: 12px;
background: rgba(0, 0, 0, 0.95);
padding: 10px;
border-radius: 6px;
z-index: 2;
display: none;
}
.settings-menu.show {
display: flex;
}
.interval-slider, .opacity-slider {
width: 160px;
margin: 5px 0;
height: 4px;
}
.interval-value, .opacity-value {
color: white;
font-size: 12px;
margin-top: 3px;
margin-bottom: 8px;
}
.setting-group {
margin-bottom: 10px;
}
.setting-group:last-child {
margin-bottom: 0;
}
@keyframes spin {
from { transform: rotate(0deg); }
to { transform: rotate(360deg); }
}
`;
document.head.appendChild(style);
}
function createSettingsButton() {
const button = document.createElement('div');
button.className = 'settings-button';
const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
svg.setAttribute("xmlns", "http://www.w3.org/2000/svg");
svg.setAttribute("viewBox", "0 0 512 512");
const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
path.setAttribute("fill", "white");
path.setAttribute("d", "M495.9 166.6c3.2 8.7 .5 18.4-6.4 24.6l-43.3 39.4c1.1 8.3 1.7 16.8 1.7 25.4s-.6 17.1-1.7 25.4l43.3 39.4c6.9 6.2 9.6 15.9 6.4 24.6c-4.4 11.9-9.7 23.3-15.8 34.3l-4.7 8.1c-6.6 11-14 21.4-22.1 31.2c-5.9 7.2-15.7 9.6-24.5 6.8l-55.7-17.7c-13.4 10.3-28.2 18.9-44 25.4l-12.5 57.1c-2 9.1-9 16.3-18.2 17.8c-13.8 2.3-28 3.5-42.5 3.5s-28.7-1.2-42.5-3.5c-9.2-1.5-16.2-8.7-18.2-17.8l-12.5-57.1c-15.8-6.5-30.6-15.1-44-25.4L83.1 425.9c-8.8 2.8-18.6 .3-24.5-6.8c-8.1-9.8-15.5-20.2-22.1-31.2l-4.7-8.1c-6.1-11-11.4-22.4-15.8-34.3c-3.2-8.7-.5-18.4 6.4-24.6l43.3-39.4C64.6 273.1 64 264.6 64 256s.6-17.1 1.7-25.4L22.4 191.2c-6.9-6.2-9.6-15.9-6.4-24.6c4.4-11.9 9.7-23.3 15.8-34.3l4.7-8.1c6.6-11 14-21.4 22.1-31.2c5.9-7.2 15.7-9.6 24.5-6.8l55.7 17.7c13.4-10.3 28.2-18.9 44-25.4l12.5-57.1c2-9.1 9-16.3 18.2-17.8C227.3 1.2 241.5 0 256 0s28.7 1.2 42.5 3.5c9.2 1.5 16.2 8.7 18.2 17.8l12.5 57.1c15.8 6.5 30.6 15.1 44 25.4l55.7-17.7c8.8-2.8 18.6-.3 24.5 6.8c8.1 9.8 15.5 20.2 22.1 31.2l4.7 8.1c6.1 11 11.4 22.4 15.8 34.3zM256 336a80 80 0 1 0 0-160 80 80 0 1 0 0 160z");
svg.appendChild(path);
button.appendChild(svg);
return button;
}
function createSettingsMenu() {
const menu = document.createElement('div');
menu.className = 'settings-menu';
menu.style.gap = '15px';
menu.style.width = '360px';
const displaySection = createDisplaySection();
const controlsSection = createControlsSection();
menu.appendChild(displaySection);
menu.appendChild(controlsSection);
return menu;
}
function createDisplaySection() {
const displaySection = document.createElement('div');
displaySection.style.flex = '1';
const displayLabel = document.createElement('label');
displayLabel.textContent = 'Display Options';
displayLabel.style.marginBottom = '10px';
displayLabel.style.display = 'block';
displayLabel.style.fontSize = '16px';
displayLabel.style.fontWeight = 'bold';
displaySection.appendChild(displayLabel);
OPTIONS.forEach(option => {
const checkboxContainer = document.createElement('div');
checkboxContainer.style.display = 'flex';
checkboxContainer.style.alignItems = 'center';
checkboxContainer.style.marginTop = '5px';
const checkbox = document.createElement('input');
checkbox.type = 'checkbox';
checkbox.id = `show-${option}`;
checkbox.checked = localStorage.getItem(`show-${option}`) !== 'false';
checkbox.style.marginRight = '8px';
checkbox.style.cursor = 'pointer';
const checkboxLabel = document.createElement('label');
checkboxLabel.htmlFor = `show-${option}`;
checkboxLabel.textContent = option.charAt(0).toUpperCase() + option.slice(1);
checkboxLabel.style.cursor = 'pointer';
checkboxLabel.style.color = 'white';
checkboxLabel.style.fontSize = '14px';
checkbox.addEventListener('change', () => {
localStorage.setItem(`show-${option}`, checkbox.checked);
updateDisplayState();
});
checkboxContainer.appendChild(checkbox);
checkboxContainer.appendChild(checkboxLabel);
displaySection.appendChild(checkboxContainer);
});
return displaySection;
}
function createControlsSection() {
const controlsSection = document.createElement('div');
controlsSection.style.flex = '1';
const intervalLabel = document.createElement('label');
intervalLabel.textContent = 'Update Interval';
intervalLabel.style.display = 'block';
intervalLabel.style.marginBottom = '5px';
intervalLabel.style.fontSize = '16px';
intervalLabel.style.fontWeight = 'bold';
const intervalSlider = document.createElement('input');
intervalSlider.type = 'range';
intervalSlider.min = '2';
intervalSlider.max = '10';
intervalSlider.value = updateInterval / 1000;
intervalSlider.step = '1';
intervalSlider.className = 'interval-slider';
const intervalValue = document.createElement('div');
intervalValue.className = 'interval-value';
intervalValue.textContent = `${intervalSlider.value}s`;
intervalValue.style.marginBottom = '15px';
intervalValue.style.fontSize = '14px';
intervalSlider.addEventListener('input', (e) => {
const newInterval = parseInt(e.target.value) * 1000;
intervalValue.textContent = `${e.target.value}s`;
updateInterval = newInterval;
localStorage.setItem('youtubeEnhancerInterval', newInterval);
if (intervalId) {
clearInterval(intervalId);
intervalId = setInterval(() => {
updateOverlayContent(overlay, currentChannelName);
}, newInterval);
}
});
const opacityLabel = document.createElement('label');
opacityLabel.textContent = 'Background Opacity';
opacityLabel.style.display = 'block';
opacityLabel.style.marginBottom = '5px';
opacityLabel.style.fontSize = '16px';
opacityLabel.style.fontWeight = 'bold';
const opacitySlider = document.createElement('input');
opacitySlider.type = 'range';
opacitySlider.min = '50';
opacitySlider.max = '90';
opacitySlider.value = overlayOpacity * 100;
opacitySlider.step = '5';
opacitySlider.className = 'opacity-slider';
const opacityValue = document.createElement('div');
opacityValue.className = 'opacity-value';
opacityValue.textContent = `${opacitySlider.value}%`;
opacityValue.style.fontSize = '14px';
opacitySlider.addEventListener('input', (e) => {
const newOpacity = parseInt(e.target.value) / 100;
opacityValue.textContent = `${e.target.value}%`;
overlayOpacity = newOpacity;
localStorage.setItem('youtubeEnhancerOpacity', newOpacity);
if (overlay) {
overlay.style.backgroundColor = `rgba(0, 0, 0, ${newOpacity})`;
}
});
controlsSection.appendChild(intervalLabel);
controlsSection.appendChild(intervalSlider);
controlsSection.appendChild(intervalValue);
controlsSection.appendChild(opacityLabel);
controlsSection.appendChild(opacitySlider);
controlsSection.appendChild(opacityValue);
return controlsSection;
}
function createSpinner() {
const spinnerContainer = document.createElement('div');
spinnerContainer.style.position = 'absolute';
spinnerContainer.style.top = '0';
spinnerContainer.style.left = '0';
spinnerContainer.style.width = '100%';
spinnerContainer.style.height = '100%';
spinnerContainer.style.display = 'flex';
spinnerContainer.style.justifyContent = 'center';
spinnerContainer.style.alignItems = 'center';
spinnerContainer.classList.add('spinner-container');
const spinner = document.createElementNS("http://www.w3.org/2000/svg", "svg");
spinner.setAttribute("viewBox", "0 0 512 512");
spinner.setAttribute("width", "64");
spinner.setAttribute("height", "64");
spinner.classList.add('loading-spinner');
spinner.style.animation = "spin 1s linear infinite";
const secondaryPath = document.createElementNS("http://www.w3.org/2000/svg", "path");
secondaryPath.setAttribute("d", "M0 256C0 114.9 114.1 .5 255.1 0C237.9 .5 224 14.6 224 32c0 17.7 14.3 32 32 32C150 64 64 150 64 256s86 192 192 192c69.7 0 130.7-37.1 164.5-92.6c-3 6.6-3.3 14.8-1 22.2c1.2 3.7 3 7.2 5.4 10.3c1.2 1.5 2.6 3 4.1 4.3c.8 .7 1.6 1.3 2.4 1.9c.4 .3 .8 .6 1.3 .9s.9 .6 1.3 .8c5 2.9 10.6 4.3 16 4.3c11 0 21.8-5.7 27.7-16c-44.3 76.5-127 128-221.7 128C114.6 512 0 397.4 0 256z");
secondaryPath.style.opacity = "0.4";
secondaryPath.style.fill = "white";
const primaryPath = document.createElementNS("http://www.w3.org/2000/svg", "path");
primaryPath.setAttribute("d",
"M224 32c0-17.7 14.3-32 32-32C397.4 0 512 114.6 512 256c0 46.6-12.5 90.4-34.3 128c-8.8 15.3-28.4 20.5-43.7 11.7s-20.5-28.4-11.7-43.7c16.3-28.2 25.7-61 25.7-96c0-106-86-192-192-192c-17.7 0-32-14.3-32-32z");
primaryPath.style.fill = "white";
spinner.appendChild(secondaryPath);
spinner.appendChild(primaryPath);
spinnerContainer.appendChild(spinner);
return spinnerContainer;
}
function createSVGIcon(path) {
const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
svg.setAttribute("viewBox", "0 0 640 512");
svg.setAttribute("width", "2rem");
svg.setAttribute("height", "2rem");
svg.style.marginRight = "0.5rem";
svg.style.display = "none";
const svgPath = document.createElementNS("http://www.w3.org/2000/svg", "path");
svgPath.setAttribute("d", path);
svgPath.setAttribute("fill", "white");
svg.appendChild(svgPath);
return svg;
}
function createStatContainer(className, iconPath) {
const container = document.createElement('div');
Object.assign(container.style, {
display: 'flex',
flexDirection: 'column',
alignItems: 'center',
justifyContent: 'center',
visibility: 'hidden',
width: '33%',
height: '100%',
padding: '0 1rem'
});
const numberContainer = document.createElement('div');
Object.assign(numberContainer.style, {
display: 'flex',
flexDirection: 'column',
alignItems: 'center',
justifyContent: 'center'
});
const differenceElement = document.createElement('div');
differenceElement.classList.add(`${className}-difference`);
Object.assign(differenceElement.style, {
fontSize: '2.5rem',
height: '2.5rem',
marginBottom: '1rem'
});
const digitContainer = createNumberContainer();
digitContainer.classList.add(`${className}-number`);
Object.assign(digitContainer.style, {
fontSize: '4rem',
fontWeight: 'bold',
lineHeight: '1',
height: '4rem',
fontFamily: 'inherit',
letterSpacing: '0.025em'
});
numberContainer.appendChild(differenceElement);
numberContainer.appendChild(digitContainer);
const labelContainer = document.createElement('div');
Object.assign(labelContainer.style, {
display: 'flex',
alignItems: 'center',
marginTop: '0.5rem'
});
const icon = createSVGIcon(iconPath);
Object.assign(icon.style, {
width: '2rem',
height: '2rem',
marginRight: '0.75rem'
});
const labelElement = document.createElement('div');
labelElement.classList.add(`${className}-label`);
labelElement.style.fontSize = '2rem';
labelContainer.appendChild(icon);
labelContainer.appendChild(labelElement);
container.appendChild(numberContainer);
container.appendChild(labelContainer);
return container;
}
function createOverlay(bannerElement) {
clearExistingOverlay();
if (!bannerElement) return null;
const overlay = document.createElement('div');
overlay.classList.add('channel-banner-overlay');
Object.assign(overlay.style, {
position: 'absolute',
top: '0',
left: '0',
width: '100%',
height: '100%',
backgroundColor: `rgba(0, 0, 0, ${overlayOpacity})`,
borderRadius: '15px',
zIndex: '1',
display: 'flex',
justifyContent: 'space-around',
alignItems: 'center',
color: 'white',
fontFamily: 'Rubik, sans-serif'
});
const settingsButton = createSettingsButton();
const settingsMenu = createSettingsMenu();
overlay.appendChild(settingsButton);
overlay.appendChild(settingsMenu);
settingsButton.addEventListener('click', (e) => {
e.stopPropagation();
settingsMenu.classList.toggle('show');
});
document.addEventListener('click', (e) => {
if (!settingsMenu.contains(e.target) && !settingsButton.contains(e.target)) {
settingsMenu.classList.remove('show');
}
});
const spinner = createSpinner();
overlay.appendChild(spinner);
const subscribersElement = createStatContainer('subscribers', "M144 160c-44.2 0-80-35.8-80-80S99.8 0 144 0s80 35.8 80 80s-35.8 80-80 80zm368 0c-44.2 0-80-35.8-80-80s35.8-80 80-80s80 35.8 80 80s-35.8 80-80 80zM0 298.7C0 239.8 47.8 192 106.7 192h42.7c15.9 0 31 3.5 44.6 9.7c-1.3 7.2-1.9 14.7-1.9 22.3c0 38.2 16.8 72.5 43.3 96c-.2 0-.4 0-.7 0H21.3C9.6 320 0 310.4 0 298.7zM405.3 320c-.2 0-.4 0-.7 0c26.6-23.5 43.3-57.8 43.3-96c0-7.6-.7-15-1.9-22.3c13.6-6.3 28.7-9.7 44.6-9.7h42.7C592.2 192 640 239.8 640 298.7c0 11.8-9.6 21.3-21.3 21.3H405.3zM416 224c0 53-43 96-96 96s-96-43-96-96s43-96 96-96s96 43 96 96zM128 485.3C128 411.7 187.7 352 261.3 352H378.7C452.3 352 512 411.7 512 485.3c0 14.7-11.9 26.7-26.7 26.7H154.7c-14.7 0-26.7-11.9-26.7-26.7z");
const viewsElement = createStatContainer('views', "M288 32c-80.8 0-145.5 36.8-192.6 80.6C48.6 156 17.3 208 2.5 243.7c-3.3 7.9-3.3 16.7 0 24.6C17.3 304 48.6 356 95.4 399.4C142.5 443.2 207.2 480 288 480s145.5-36.8 192.6-80.6c46.8-43.5 78.1-95.4 93-131.1c3.3-7.9 3.3-16.7 0-24.6c-14.9-35.7-46.2-87.7-93-131.1C433.5 68.8 368.8 32 288 32zM144 256a144 144 0 1 1 288 0 144 144 0 1 1 -288 0zm144-64c0 35.3-28.7 64-64 64c-7.1 0-13.9-1.2-20.3-3.3c-5.5-1.8-11.9 1.6-11.7 7.4c.3 6.9 1.3 13.8 3.2 20.7c13.7 51.2 66.4 81.6 117.6 67.9s81.6-66.4 67.9-117.6c-11.1-41.5-47.8-69.4-88.6-71.1c-5.8-.2-9.2 6.1-7.4 11.7c2.1 6.4 3.3 13.2 3.3 20.3z");
const videosElement = createStatContainer('videos', "M0 128C0 92.7 28.7 64 64 64H320c35.3 0 64 28.7 64 64V384c0 35.3-28.7 64-64 64H64c-35.3 0-64-28.7-64-64V128zM559.1 99.8c10.4 5.6 16.9 16.4 16.9 28.2V384c0 11.8-6.5 22.6-16.9 28.2s-23 5-32.9-1.6l-96-64L416 337.1V320 192 174.9l14.2-9.5 96-64c9.8-6.5 22.4-7.2 32.9-1.6z");
overlay.appendChild(subscribersElement);
overlay.appendChild(viewsElement);
overlay.appendChild(videosElement);
bannerElement.appendChild(overlay);
updateDisplayState();
return overlay;
}
function fetchWithGM(url, headers = {}) {
return new Promise((resolve, reject) => {
GM_xmlhttpRequest({
method: "GET",
url: url,
headers: headers,
onload: function(response) {
if (response.status === 200) {
resolve(JSON.parse(response.responseText));
} else {
reject(new Error(`Failed to fetch: ${response.status}`));
}
},
onerror: function(error) {
reject(error);
},
});
});
}
async function fetchChannelId(channelName) {
try {
const channelInfo = await getChannelInfo(window.location.href);
if (channelInfo && channelInfo.channelId) {
return channelInfo.channelId;
}
const metaTag = document.querySelector('meta[itemprop="channelId"]');
if (metaTag && metaTag.content) {
return metaTag.content;
}
const urlMatch = window.location.href.match(/channel\/(UC[\w-]+)/);
if (urlMatch && urlMatch[1]) {
return urlMatch[1];
}
throw new Error('Could not determine channel ID');
} catch (error) {
const metaTag = document.querySelector('meta[itemprop="channelId"]');
if (metaTag && metaTag.content) {
return metaTag.content;
}
const urlMatch = window.location.href.match(/channel\/(UC[\w-]+)/);
if (urlMatch && urlMatch[1]) {
return urlMatch[1];
}
throw new Error('Could not determine channel ID');
}
}
async function fetchChannelStats(channelId) {
try {
let retries = 3;
let lastError;
while (retries > 0) {
try {
const stats = await fetchWithGM(
`${STATS_API_URL}${channelId}`,
{
origin: "https://livecounts.io",
referer: "https://livecounts.io/",
}
);
if (!stats || typeof stats.followerCount === 'undefined') {
throw new Error('Invalid stats response');
}
lastSuccessfulStats.set(channelId, stats);
return stats;
} catch (e) {
lastError = e;
retries--;
if (retries > 0) {
await new Promise(resolve => setTimeout(resolve, 1000));
}
}
}
if (lastSuccessfulStats.has(channelId)) {
return lastSuccessfulStats.get(channelId);
}
const fallbackStats = {
followerCount: 0,
bottomOdos: [0, 0],
error: true
};
const subCountElem = document.querySelector('#subscriber-count');
if (subCountElem) {
const subText = subCountElem.textContent;
const subMatch = subText.match(/[\d,]+/);
if (subMatch) {
fallbackStats.followerCount = parseInt(subMatch[0].replace(/,/g, ''));
}
}
return fallbackStats;
} catch (error) {
throw error;
}
}
function clearExistingOverlay() {
const existingOverlay = document.querySelector('.channel-banner-overlay');
if (existingOverlay) {
existingOverlay.remove();
}
if (intervalId) {
clearInterval(intervalId);
intervalId = null;
}
lastSuccessfulStats.clear();
previousStats.clear();
isUpdating = false;
overlay = null;
}
function createDigitElement() {
const digit = document.createElement('span');
Object.assign(digit.style, {
display: 'inline-block',
width: '0.6em',
textAlign: 'center',
marginRight: '0.025em',
marginLeft: '0.025em'
});
return digit;
}
function createCommaElement() {
const comma = document.createElement('span');
comma.textContent = ',';
Object.assign(comma.style, {
display: 'inline-block',
width: '0.3em',
textAlign: 'center'
});
return comma;
}
function createNumberContainer() {
const container = document.createElement('div');
Object.assign(container.style, {
display: 'flex',
justifyContent: 'center',
alignItems: 'center',
letterSpacing: '0.025em'
});
return container;
}
function updateDigits(container, newValue) {
const newValueStr = newValue.toString();
const digits = [];
for (let i = newValueStr.length - 1; i >= 0; i -= 3) {
const start = Math.max(0, i - 2);
digits.unshift(newValueStr.slice(start, i + 1));
}
while (container.firstChild) {
container.removeChild(container.firstChild);
}
let digitIndex = 0;
for (let i = 0; i < digits.length; i++) {
const group = digits[i];
for (let j = 0; j < group.length; j++) {
const digitElement = createDigitElement();
digitElement.textContent = group[j];
container.appendChild(digitElement);
digitIndex++;
}
if (i < digits.length - 1) {
container.appendChild(createCommaElement());
}
}
let elementIndex = 0;
for (let i = 0; i < digits.length; i++) {
const group = digits[i];
for (let j = 0; j < group.length; j++) {
const digitElement = container.children[elementIndex];
const newDigit = parseInt(group[j]);
const currentDigit = parseInt(digitElement.textContent || '0');
if (currentDigit !== newDigit) {
animateDigit(digitElement, currentDigit, newDigit);
}
elementIndex++;
}
if (i < digits.length - 1) {
elementIndex++;
}
}
}
function animateDigit(element, start, end) {
const duration = 1000;
const startTime = performance.now();
function update(currentTime) {
const elapsed = currentTime - startTime;
const progress = Math.min(elapsed / duration, 1);
const easeOutQuart = 1 - Math.pow(1 - progress, 4);
const current = Math.round(start + (end - start) * easeOutQuart);
element.textContent = current;
if (progress < 1) {
requestAnimationFrame(update);
}
}
requestAnimationFrame(update);
}
function showContent(overlay) {
const spinnerContainer = overlay.querySelector('.spinner-container');
if (spinnerContainer) {
spinnerContainer.remove();
}
const containers = overlay.querySelectorAll('div[style*="visibility: hidden"]');
containers.forEach(container => {
container.style.visibility = 'visible';
});
const icons = overlay.querySelectorAll('svg[style*="display: none"]');
icons.forEach(icon => {
icon.style.display = 'block';
});
}
function updateDifferenceElement(element, currentValue, previousValue) {
if (!previousValue) return;
const difference = currentValue - previousValue;
if (difference === 0) {
element.textContent = '';
return;
}
const sign = difference > 0 ? '+' : '';
element.textContent = `${sign}${difference.toLocaleString()}`;
element.style.color = difference > 0 ? '#1ed760' : '#f3727f';
setTimeout(() => {
element.textContent = '';
}, 1000);
}
function updateDisplayState() {
const overlay = document.querySelector('.channel-banner-overlay');
if (!overlay) return;
const statContainers = overlay.querySelectorAll('div[style*="width"]');
if (!statContainers.length) return;
let visibleCount = 0;
const visibleContainers = [];
statContainers.forEach(container => {
const numberContainer = container.querySelector('[class$="-number"]');
if (!numberContainer) return;
const type = numberContainer.className.replace('-number', '');
const isVisible = localStorage.getItem(`show-${type}`) !== 'false';
if (isVisible) {
container.style.display = 'flex';
visibleCount++;
visibleContainers.push(container);
} else {
container.style.display = 'none';
}
});
visibleContainers.forEach(container => {
container.style.width = '';
container.style.margin = '';
switch (visibleCount) {
case 1:
container.style.width = '100%';
break;
case 2:
container.style.width = '50%';
break;
case 3:
container.style.width = '33.33%';
break;
default:
container.style.display = 'none';
}
});
overlay.style.display = 'flex';
}
async function updateOverlayContent(overlay, channelName) {
if (isUpdating || channelName !== currentChannelName) return;
isUpdating = true;
try {
const channelId = await fetchChannelId(channelName);
const stats = await fetchChannelStats(channelId);
if (channelName !== currentChannelName) {
isUpdating = false;
return;
}
if (stats.error) {
const containers = overlay.querySelectorAll('[class$="-number"]');
containers.forEach(container => {
if (container.classList.contains('subscribers-number') && stats.followerCount > 0) {
updateDigits(container, stats.followerCount);
} else {
container.textContent = '---';
}
});
return;
}
const updateElement = (className, value, label) => {
const numberContainer = overlay.querySelector(`.${className}-number`);
const differenceElement = overlay.querySelector(`.${className}-difference`);
const labelElement = overlay.querySelector(`.${className}-label`);
if (numberContainer) {
updateDigits(numberContainer, value);
}
if (differenceElement && previousStats.has(channelId)) {
const previousValue = className === 'subscribers' ?
previousStats.get(channelId).followerCount :
previousStats.get(channelId).bottomOdos[className === 'views' ? 0 : 1];
updateDifferenceElement(differenceElement, value, previousValue);
}
if (labelElement) {
labelElement.textContent = label;
}
};
updateElement('subscribers', stats.followerCount, 'Subscribers');
updateElement('views', stats.bottomOdos[0], 'Views');
updateElement('videos', stats.bottomOdos[1], 'Videos');
if (!previousStats.has(channelId)) {
showContent(overlay);
}
previousStats.set(channelId, stats);
} catch (error) {
const containers = overlay.querySelectorAll('[class$="-number"]');
containers.forEach(container => {
container.textContent = '---';
});
} finally {
isUpdating = false;
}
}
function addOverlay(bannerElement) {
const channelName = window.location.pathname.split("/")[1].replace("@", "");
if (channelName === currentChannelName && overlay) {
return;
}
currentChannelName = channelName;
overlay = createOverlay(bannerElement);
if (overlay) {
if (intervalId) {
clearInterval(intervalId);
}
intervalId = setInterval(() => {
updateOverlayContent(overlay, channelName);
}, updateInterval);
updateOverlayContent(overlay, channelName);
}
}
function isChannelPage() {
return window.location.pathname.startsWith("/@") ||
window.location.pathname.startsWith("/channel/") ||
window.location.pathname.startsWith("/c/");
}
function observePageChanges() {
const observer = new MutationObserver((mutations) => {
for (const mutation of mutations) {
if (mutation.type === 'childList') {
const bannerElement = document.getElementById('page-header-banner-sizer');
if (bannerElement && isChannelPage()) {
addOverlay(bannerElement);
break;
}
}
}
});
observer.observe(document.body, {
childList: true,
subtree: true
});
}
function addNavigationListener() {
window.addEventListener("yt-navigate-finish", () => {
if (!isChannelPage()) {
clearExistingOverlay();
currentChannelName = null;
} else {
const bannerElement = document.getElementById('page-header-banner-sizer');
if (bannerElement) {
addOverlay(bannerElement);
}
}
});
}
init();
})();
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