您需要先安装一个扩展,例如 篡改猴、Greasemonkey 或 暴力猴,之后才能安装此脚本。
您需要先安装一个扩展,例如 篡改猴 或 暴力猴,之后才能安装此脚本。
您需要先安装一个扩展,例如 篡改猴 或 暴力猴,之后才能安装此脚本。
您需要先安装一个扩展,例如 篡改猴 或 Userscripts ,之后才能安装此脚本。
您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey,才能安装此脚本。
您需要先安装用户脚本管理器扩展后才能安装此脚本。
让您的 YouTube 直播聊天即时滚动,不经过平滑转换 CSS。
当前为
- // ==UserScript==
- // @name YouTube Super Fast Chat
- // @version 0.3.1
- // @license MIT
- // @name:ja YouTube スーパーファーストチャット
- // @name:zh-TW YouTube 超快聊天
- // @name:zh-CN YouTube 超快聊天
- // @namespace UserScript
- // @match https://www.youtube.com/live_chat*
- // @author CY Fung
- // @run-at document-start
- // @grant none
- // @unwrap
- // @allFrames true
- // @inject-into page
- //
- // @description To make your YouTube Live Chat scroll instantly without smoothing transform CSS
- // @description:ja YouTubeライブチャットをスムーズな変形CSSなしで瞬時にスクロールさせるために。
- // @description:zh-TW 讓您的 YouTube 直播聊天即時滾動,不經過平滑轉換 CSS。
- // @description:zh-CN 让您的 YouTube 直播聊天即时滚动,不经过平滑转换 CSS。
- //
- // ==/UserScript==
- ((__CONTEXT__) => {
- // const ACTIVE_DEFERRED_APPEND = false; // somehow buggy
- const ACTIVE_CONTENT_VISIBILITY = true;
- const ACTIVE_CONTAIN_SIZE = true;
- const addCss = () => document.head.appendChild(document.createElement('style')).textContent = [
- !ACTIVE_CONTENT_VISIBILITY ? '' : `
- @supports (contain:layout paint style) and (content-visibility:auto) and (contain-intrinsic-size:auto var(--wsr94)) {
- [wSr93] {
- content-visibility: visible;
- }
- [wSr93="hidden"]:nth-last-child(n+4) {
- content-visibility: auto;
- contain-intrinsic-size: auto var(--wsr94);
- }
- }
- `,
- !ACTIVE_CONTAIN_SIZE ? '' : `
- @supports (contain:layout paint style) {
- [wSr93*="i"] {
- height: var(--wsr94);
- box-sizing: border-box;
- contain: size layout style;
- }
- }
- `,
- `
- @supports (contain:layout paint style) {
- [wSr93*="i"] {
- height: var(--wsr94);
- box-sizing: border-box;
- contain: size layout style;
- }
- /* optional */
- #item-offset.style-scope.yt-live-chat-item-list-renderer {
- height: auto !important;
- min-height: unset !important;
- }
- #items.style-scope.yt-live-chat-item-list-renderer {
- transform: translateY(0px) !important;
- }
- /* optional */
- yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * {
- pointer-events: none !important;
- }
- #item-list.style-scope.yt-live-chat-renderer, yt-live-chat-item-list-renderer.style-scope.yt-live-chat-renderer, #item-list.style-scope.yt-live-chat-renderer *, yt-live-chat-item-list-renderer.style-scope.yt-live-chat-renderer * {
- will-change: unset !important;
- }
- yt-img-shadow[height][width] {
- content-visibility: visible !important;
- }
- #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer {
- position: static !important;
- }
- /* ------------------------------------------------------------------------------------------------------------- */
- yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip, yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip yt-live-chat-author-badge-renderer, yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip yt-live-chat-author-badge-renderer #image, yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip yt-live-chat-author-badge-renderer #image img {
- contain: layout style;
- }
- /*
- yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip,
- yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip yt-live-chat-author-badge-renderer,
- yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip yt-live-chat-author-badge-renderer #image,
- yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip yt-live-chat-author-badge-renderer #image img {
- contain: layout style;
- display: inline-flex;
- vertical-align: middle;
- }
- */
- #items yt-live-chat-text-message-renderer {
- contain: layout style;
- }
- yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer {
- overflow-y: scroll;
- padding-right: 0;
- }
- body yt-live-chat-app {
- contain: size layout paint style;
- overflow: hidden;
- }
- #items.style-scope.yt-live-chat-item-list-renderer {
- contain: layout paint style;
- }
- #item-offset.style-scope.yt-live-chat-item-list-renderer {
- contain: style;
- }
- #item-scroller.style-scope.yt-live-chat-item-list-renderer {
- contain: size style;
- }
- #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] {
- contain: size layout paint style;
- }
- .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container {
- contain: layout paint style;
- }
- yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer, yt-live-chat-membership-item-renderer.style-scope.yt-live-chat-item-list-renderer, yt-live-chat-paid-message-renderer.style-scope.yt-live-chat-item-list-renderer, yt-live-chat-banner-manager.style-scope.yt-live-chat-item-list-renderer {
- contain: layout style;
- }
- tp-yt-paper-tooltip[style*="inset"][role="tooltip"] {
- contain: layout paint style;
- }
- /*
- #item-offset.style-scope.yt-live-chat-item-list-renderer {
- position: relative !important;
- height: auto !important;
- }
- */
- /* ------------------------------------------------------------------------------------------------------------- */
- #items.style-scope.yt-live-chat-item-list-renderer {
- padding-top: var(--items-top-padding);
- }
- #continuations, #continuations * {
- contain: strict;
- position: fixed;
- top: 2px;
- height: 1px;
- width: 2px;
- height: 1px;
- visibility: collapse;
- }
- }
- `
- ].join('\n');
- const { Promise, requestAnimationFrame, IntersectionObserver } = __CONTEXT__;
- const isContainSupport = CSS.supports('contain', 'layout paint style');
- if (!isContainSupport) {
- console.error(`
- YouTube Light Chat Scroll: Your browser does not support 'contain'.
- Chrome >= 52; Edge >= 79; Safari >= 15.4, Firefox >= 69; Opera >= 39
- `.trim());
- return;
- }
- // const APPLY_delayAppendChild = false;
- let activeDeferredAppendChild = false; // deprecated
- // let delayedAppendParentWS = new WeakSet();
- // let delayedAppendOperations = [];
- // let commonAppendParentStackSet = new Set();
- let firstVisibleItemDetected = false; // deprecated
- const sp7 = Symbol();
- let dt0 = Date.now() - 2000;
- const dateNow = () => Date.now() - dt0;
- // let lastScroll = 0;
- // let lastLShow = 0;
- let lastWheel = 0;
- const proxyHelperFn = (dummy) => ({
- get(target, prop) {
- return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop];
- },
- set(target, prop, value) {
- if (!(prop in dummy)) {
- target[prop] = value;
- }
- return true;
- },
- has(target, prop) {
- return (prop in target)
- },
- deleteProperty(target, prop) {
- return true;
- },
- ownKeys(target) {
- return Object.keys(target);
- },
- defineProperty(target, key, descriptor) {
- return Object.defineProperty(target, key, descriptor);
- },
- getOwnPropertyDescriptor(target, key) {
- return Object.getOwnPropertyDescriptor(target, key);
- },
- });
- // const dummy3v = {
- // "background": "",
- // "backgroundAttachment": "",
- // "backgroundBlendMode": "",
- // "backgroundClip": "",
- // "backgroundColor": "",
- // "backgroundImage": "",
- // "backgroundOrigin": "",
- // "backgroundPosition": "",
- // "backgroundPositionX": "",
- // "backgroundPositionY": "",
- // "backgroundRepeat": "",
- // "backgroundRepeatX": "",
- // "backgroundRepeatY": "",
- // "backgroundSize": ""
- // };
- // for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
- // dummy3v[k] = ((k) => (function () { const style = this[sp7]; return style[k](...arguments); }))(k)
- // }
- // const dummy3p = phFn(dummy3v);
- const pt2DecimalFixer = (x) => Math.round(x * 5, 0) / 5;
- const tickerContainerSetAttribute = function (attrName, attrValue) {
- let yd = (this.__dataHost || 0).__data;
- if (arguments.length === 2 && attrName === 'style' && yd && attrValue) {
- // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_;
- let v = `${attrValue}`;
- // conside a ticker is 101px width
- // 1% = 1.01px
- // 0.2% = 0.202px
- const ratio1 = (yd.ratio * 100);
- if (ratio1 > -1) { // avoid NaN
- const ratio2 = pt2DecimalFixer(ratio1);
- v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`)
- if (yd.__style_last__ === v) return;
- yd.__style_last__ = v;
- }
- HTMLElement.prototype.setAttribute.call(this, attrName, v);
- } else {
- HTMLElement.prototype.setAttribute.apply(this, arguments);
- }
- };
- const fxOperator = (proto, propertyName) => {
- let propertyDescriptorGetter = null;
- try {
- propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get;
- } catch (e) { }
- return typeof propertyDescriptorGetter === 'function' ? (e) => propertyDescriptorGetter.call(e) : (e) => e[propertyName];
- };
- const nodeParent = fxOperator(Node.prototype, 'parentNode');
- // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild');
- const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling');
- const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling');
- const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild');
- /* globals WeakRef:false */
- /** @type {(o: Object | null) => WeakRef | null} */
- const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null); // typeof InvalidVar == 'undefined'
- /** @type {(wr: Object | null) => Object | null} */
- const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
- const watchUserCSS = () => {
- // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return;
- const getElemFromWR = (nr) => {
- const n = kRef(nr);
- if (n && n.isConnected) return n;
- return null;
- }
- const clearContentVisibilitySizing = () => {
- Promise.resolve().then(() => {
- let btnShowMoreWR = mWeakRef(document.querySelector('#show-more[disabled]'));
- let lastVisibleItemWR = null;
- for (const elm of document.querySelectorAll('[wSr93]')) {
- if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm);
- elm.setAttribute('wSr93', '');
- // custom CSS property --wsr94 not working when attribute wSr93 removed
- }
- requestAnimationFrame(() => {
- const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null;
- if (btnShowMore) btnShowMore.click();
- else {
- // would not work if switch it frequently
- const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null;
- if (lastVisibleItem) {
- Promise.resolve()
- .then(() => lastVisibleItem.scrollIntoView())
- .then(() => lastVisibleItem.scrollIntoView(false))
- .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" }))
- .catch(e => { }) // break the chain when method not callable
- }
- }
- })
- })
- }
- const mutObserver = new MutationObserver((mutations) => {
- for (const mutation of mutations) {
- if ((mutation.addedNodes || 0).length >= 1) {
- for (const addedNode of mutation.addedNodes) {
- if (addedNode.nodeName === 'STYLE') {
- clearContentVisibilitySizing();
- return;
- }
- }
- }
- if ((mutation.removedNodes || 0).length >= 1) {
- for (const removedNode of mutation.removedNodes) {
- if (removedNode.nodeName === 'STYLE') {
- clearContentVisibilitySizing();
- return;
- }
- }
- }
- }
- });
- mutObserver.observe(document.documentElement, {
- childList: true,
- subtree: false
- })
- mutObserver.observe(document.head, {
- childList: true,
- subtree: false
- })
- mutObserver.observe(document.body, {
- childList: true,
- subtree: false
- });
- }
- const setupStyle = (m1, m2) => {
- const dummy1v = {
- transform: '',
- height: '',
- minHeight: '',
- paddingBottom: '',
- paddingTop: ''
- };
- for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
- dummy1v[k] = ((k) => (function () { const style = this[sp7]; return style[k](...arguments); }))(k)
- }
- const dummy1p = proxyHelperFn(dummy1v);
- const sp1v = new Proxy(m1.style, dummy1p);
- const sp2v = new Proxy(m2.style, dummy1p);
- Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true });
- Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true });
- m1.removeAttribute("style");
- m2.removeAttribute("style");
- }
- let done = 0;
- let main = async (q) => {
- if (done) return;
- if (!q) return;
- let m1 = nodeParent(q);
- let m2 = q;
- if (!(m1 && m1.id === 'item-offset' && m2 && m2.id === 'items')) return;
- done = 1;
- Promise.resolve().then(watchUserCSS);
- addCss();
- setupStyle(m1, m2);
- let lcRendererWR = null;
- const lcRendererElm = () => {
- let lcRenderer = kRef(lcRendererWR);
- if (!lcRenderer || !lcRenderer.isConnected) {
- lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer');
- lcRendererWR = mWeakRef(lcRenderer);
- }
- return lcRenderer
- };
- let hasFirstShowMore = false;
- const visObserver = new IntersectionObserver((entries) => {
- for (const entry of entries) {
- const target = entry.target;
- if (!target) continue;
- let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5;
- if (isVisible) {
- target.style.setProperty('--wsr94', entry.boundingClientRect.height + 'px');
- target.setAttribute('wSr93', 'visible');
- if (nNextElem(target) === null) {
- firstVisibleItemDetected = true;
- /*
- if (dateNow() - lastScroll < 80) {
- lastLShow = 0;
- lastScroll = 0;
- Promise.resolve().then(clickShowMore);
- } else {
- lastLShow = dateNow();
- }
- */
- // lastLShow = dateNow();
- } else if (!hasFirstShowMore) { // should more than one item being visible
- // implement inside visObserver to ensure there is sufficient delay
- hasFirstShowMore = true;
- requestAnimationFrame(() => {
- // foreground page
- activeDeferredAppendChild = true;
- // page visibly ready -> load the latest comments at initial loading
- const lcRenderer = lcRendererElm();
- lcRenderer.scrollToBottom_();
- });
- }
- }
- else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing
- target.style.setProperty('--wsr94', entry.boundingClientRect.height + 'px');
- target.setAttribute('wSr93', 'hidden');
- } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' <new last item>
- }
- }, {
- /*
- root: items,
- rootMargin: "0px",
- threshold: 1.0,
- */
- // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable
- rootMargin: "0px",
- threshold: [0.05, 0.95],
- });
- //m2.style.visibility='';
- const mutFn = (items) => {
- for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) {
- if (node.hasAttribute('wSr93')) break;
- node.setAttribute('wSr93', '');
- visObserver.observe(node);
- }
- }
- const mutObserver = new MutationObserver((mutations) => {
- const items = (mutations[0] || 0).target;
- if (!items) return;
- mutFn(items);
- });
- const setupMutObserver = (m2) => {
- mutObserver.disconnect();
- mutObserver.takeRecords();
- if (m2) {
- mutObserver.observe(m2, {
- childList: true,
- subtree: false
- });
- mutFn(m2);
- }
- }
- setupMutObserver(m2);
- const mclp = (customElements.get('yt-live-chat-item-list-renderer') || 0).prototype
- if (mclp) {
- mclp.attached66 = mclp.attached;
- mclp.attached = function () {
- let m2 = document.querySelector('#item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer');
- let m1 = nodeParent(m2);
- setupStyle(m1, m2);
- setupMutObserver(m2);
- return this.attached66();
- }
- mclp.detached66 = mclp.detached;
- mclp.detached = function () {
- setupMutObserver();
- return this.detached66();
- }
- mclp.canScrollToBottom_ = function () {
- return this.atBottom && this.allowScroll && !(dateNow() - lastWheel < 80)
- }
- // mclp.scrollToBottom66_ = mclp.scrollToBottom_;
- // mclp.scrollToBottom_ = function () {
- // this.scrollToBottom66_();
- // }
- }
- let scrollCount = 0;
- document.addEventListener('scroll', (evt) => {
- if (!evt || !evt.isTrusted) return;
- // lastScroll = dateNow();
- if (++scrollCount > 1e9) scrollCount = 9;
- }, { passive: true, capture: true }) // support contain => support passive
- // document.addEventListener('scroll', (evt) => {
- // if (!evt || !evt.isTrusted) return;
- // if (!firstVisibleItemDetected) return;
- // const isUserAction = dateNow() - lastWheel < 80; // continuous wheel -> continuous scroll -> continuous wheel -> continuous scroll
- // if (!isUserAction) return;
- // // lastScroll = dateNow();
- // }, { passive: true, capture: true }) // support contain => support passive
- let lastScrollCount = -1;
- document.addEventListener('wheel', (evt) => {
- if (!evt || !evt.isTrusted) return;
- if (lastScrollCount === scrollCount) return;
- lastScrollCount = scrollCount;
- lastWheel = dateNow();
- }, { passive: true, capture: true }) // support contain => support passive
- const fp = (renderer) => {
- const container = renderer.$.container;
- if (container) {
- container.setAttribute = tickerContainerSetAttribute;
- }
- }
- const tags = ["yt-live-chat-ticker-paid-message-item-renderer", "yt-live-chat-ticker-paid-sticker-item-renderer",
- "yt-live-chat-ticker-renderer", "yt-live-chat-ticker-sponsor-item-renderer"];
- for (const tag of tags) {
- const proto = customElements.get(tag).prototype;
- proto.attached77 = proto.attached
- proto.attached = function () {
- fp(this);
- return this.attached77();
- }
- for (const elm of document.getElementsByTagName(tag)) {
- fp(elm);
- }
- }
- };
- function onReady() {
- let tmObserver = new MutationObserver(() => {
- let p = document.getElementById('items'); // fast
- if (!p) return;
- let q = document.querySelector('#item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer'); // check
- if (q) {
- tmObserver.disconnect();
- tmObserver.takeRecords();
- tmObserver = null;
- Promise.resolve(q).then((q) => {
- // confirm Promis.resolve() is resolveable
- // execute main without direct blocking
- main(q);
- })
- }
- });
- tmObserver.observe(document.body, {
- childList: true,
- subtree: true
- });
- }
- if (document.readyState != 'loading') {
- onReady();
- } else {
- window.addEventListener("DOMContentLoaded", onReady, false);
- }
- })({ Promise, requestAnimationFrame, IntersectionObserver });
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