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全屏横屏、快进快退、长按倍速，对各种视频网站的兼容性很强。仅适用于狐猴、kiwi等chromium内核的浏览器。使用前请先关闭同类横屏或手势脚本，以避免冲突。
当前为
// ==UserScript==
// @name 俺的手机视频脚本
// @name:zh-TW 俺的手機視頻腳本
// @name:en My Phone Video Script
// @name:ja My Phone Video Script
// @name:ko My Phone Video Script
// @name:ru My Phone Video Script
// @description 全屏横屏、快进快退、长按倍速，对各种视频网站的兼容性很强。仅适用于狐猴、kiwi等chromium内核的浏览器。使用前请先关闭同类横屏或手势脚本，以避免冲突。
// @description:zh-TW 全屏橫屏、快進快退、長按倍速，對各種視頻網站的相容性很強。僅適用於狐猴、Kiwi等Chromium核心的瀏覽器。使用前請先關閉同類橫屏或手勢腳本，以避免衝突。
// @description:en Full-screen landscape, fast-forward and rewind, long-press for speed adjustment. Designed for Kiwi and Lemur browsers.
// @description:ja Full-screen landscape, fast-forward and rewind, long-press for speed adjustment. Designed for Kiwi and Lemur browsers.
// @description:ko Full-screen landscape, fast-forward and rewind, long-press for speed adjustment. Designed for Kiwi and Lemur browsers.
// @description:ru Full-screen landscape, fast-forward and rewind, long-press for speed adjustment. Designed for Kiwi and Lemur browsers.
// @version 1.8.5
// @author shopkeeperV
// @namespace http://greasyfork.icu/zh-CN/users/150069
// @match *://*/*
// @grant GM_setValue
// @grant GM_getValue
// @grant GM_addValueChangeListener
// @grant GM_registerMenuCommand
// ==/UserScript==
/*jshint esversion: 8*/
(function () {
'use strict';
let mutationTimer;
//getElementsByTagName、getElementsByClassName获取的集合是实时更新的，不需要重新获取，保留引用以提升性能
let videos = document.getElementsByTagName("video");
let iframes = document.getElementsByTagName("iframe");
let makeVideoAndIframeReady = function () {
//去除未使用框架的视频的原生全屏按钮
for (let video of videos) {
if (video.controls) {
video.controlsList = ["nofullscreen"];
console.log("俺的手机视频脚本：获取到未使用框架的视频，已去除全屏按钮。");
}
}
//放开iframe全屏
for (let iframe of iframes) {
iframe.allowFullscreen = true;
}
}
let mutationHandler = function (mutationsList) {
for (let mutation of mutationsList) {
if (mutation.type === 'childList') {
for (let node of mutation.addedNodes) {
if (node.nodeType === Node.ELEMENT_NODE) {
if (node.tagName.toLowerCase() === 'video' || node.tagName.toLowerCase() === 'iframe') {
let _window = `${top === window ? "top" : "iframe"}>${location.host}`;
if (mutationTimer) {
clearTimeout(mutationTimer);
console.log(`俺的手机视频脚本：${_window}清除定时任务。`);
}
mutationTimer = setTimeout(() => {
mutationTimer = 0;
makeVideoAndIframeReady();
console.log(`俺的手机视频脚本：${_window}处理完成。`);
}, 1000);
console.log(`俺的手机视频脚本：${_window}页面新增了一个${node.tagName.toLowerCase()}，1秒后处理。`);
return;
}
}
}
}
}
}
makeVideoAndIframeReady();
//观察页面变化，为新增的视频和iframe做好相应准备
new MutationObserver(mutationHandler).observe(document.body, {childList: true, subtree: true});
//部分网站阻止视频操作层触摸事件传播，需要指定监听目标，默认是document
//注意，对少数iframe内视频，广告插件或使此脚本不起作用
let listenTarget = document;
//youtube使用无刷新网页，需要监听地址变化重新监听操控层
if (window.location.host === "m.youtube.com") {
//特定的视频操控层，常规视频页面
let listenTargetArray = document.getElementsByClassName("player-controls-background");
//短视频页面
let shortListenTargetArray = document.getElementsByClassName("reel-player-overlay-main-content");
let refresh = function () {
console.log("俺的手机视频脚本：页面刷新...");
//youtube视频在脚本执行时还没加载，需要个定时器循环获取状态
if (window.location.href.search("\/(watch|shorts)") >= 0) {
let waitForVideo = function () {
console.log("俺的手机视频脚本：正在获取视频...");
if (videos.length > 0 && (listenTargetArray.length > 0 || shortListenTargetArray.length > 0)) {
let video = videos[0];
//非静音播放中
if (video.readyState > 1 && !video.paused && !video.muted) {
if (window.location.href.includes("watch")) {
listenTarget = listenTargetArray[0];
} else {
listenTarget = shortListenTargetArray[0];
}
//防止重复添加，在获取视频期间再次触发onurlchangge就会重复添加
if (listenTarget.getAttribute("me_video_js")) {
console.log("俺的手机视频脚本：防止重复添加。");
return;
}
listenTarget.setAttribute("me_video_js", "me_video_js");
//视频已加载
console.log("俺的手机视频脚本：开始监听手势。");
listen();
return;
}
}
setTimeout(waitForVideo, 500);
}
waitForVideo();
}
};
refresh();
//2024/12/4发现onurlchange在lemur2.7.0.035(127.0.6533.144)不能正常使用
//测试edge131.0.2903.70开发工具模拟移动设备使用正常
/*if (/xmonkey|tampermonkey/i.test(GM_info.scriptHandler)) {
window.addEventListener("urlchange", () => {
//太快的话原视频还没移除，会判断操控层已监听，不再等待新视频加载
//不同浏览器的执行时机不一样，lemur就不需要
setTimeout(refresh, 500);
});
} else {*/
const originalPushState = history.pushState;
const originalReplaceState = history.replaceState;
history.pushState = function (state) {
originalPushState.apply(history, arguments);
console.log("监听到地址变化。pushState()调用。");
setTimeout(refresh, 500);
};
history.replaceState = function (state) {
originalReplaceState.apply(history, arguments);
console.log("监听到地址变化，replaceState()调用。");
setTimeout(refresh, 500);
};
// }
}
//通用
listen();
if (window === top) {
if (GM_getValue("voiced") == null) {
GM_setValue("voiced", true);
}
if (GM_getValue("speed") == null) {
GM_setValue("speed", true);
}
let diyConfig = function (configName, key) {
GM_registerMenuCommand(configName, () => {
let value = GM_getValue(key);
GM_setValue(key, !value);
alert(`成功设置为${!value}，页面将刷新。`);
window.location.reload();
});
}
diyConfig("启用/关闭【触摸视频时取消静音】", "voiced");
diyConfig("显示/隐藏【播放速度调整按钮】", "speed");
}
function listen() {
if (listenTarget.tagName/*监听的是元素*/) {
//做个标记方便调试
listenTarget.setAttribute("listen_mark", true);
}
//对视频的查找与控制都是在每次touchstart后重新执行的
//虽然这样更消耗性能，但是对不同的网站兼容性更强
listenTarget.addEventListener("touchstart", (e) => {
//为了代码逻辑在普通视频与iframe内视频的通用性，分别使用了clientX和screenY
let startX;
let startY;
let endX;
let endY;
//多根手指不做响应
if (e.touches.length === 1) {
//在全屏时，不对边缘5%的区域做响应
let screenX = e.touches[0].screenX;
let screenY = e.touches[0].screenY;
if (document.fullscreenElement) {
if (screenX < screen.width * 0.05 || screenX > screen.width * 0.95 ||
screenY < screen.height * 0.05 || screenY > screen.height * 0.95)
return;
}
//单指触摸，记录位置
startX = Math.ceil(e.touches[0].clientX);
startY = Math.ceil(screenY);
endX = startX;
endY = startY;
} else return;
let videoElement;
//触摸的目标如果是视频或视频操控层，那他也是我们绑定手势的目标
let target = e.target;
//用于有操控层的网站，保存的是视频与操控层适当尺寸下的最大共同祖先节点，确认后需要在后代内搜索视频元素
let biggestContainer;
let targetWidth = target.clientWidth;
let targetHeight = target.clientHeight;
//所有大小合适的祖先节点最后一个为biggestContainer
let suitParents = [];
//用于判断是否含有包裹视频的a标签，需要禁止其被长按时呼出浏览器菜单
let allParents = [];
let temp = target;
//用于抖音类网站，滚动高度超过阈值后，不再继续查找祖先
let findAllSuitParent = false;
//抖音类短视频网站，特点是视频操控层占据几乎整个屏幕
let maybeTiktok = false;
//用于短视频判断
let scrollHeightOut = false;
//寻找biggestContainer
while (true) {
temp = temp.parentElement;
if (!temp/*或直接点击到html元素，他将没有父元素*/) {
return;
}
//allParents全部保存，用于判断是否存在a标签
allParents.push(temp);
if (!findAllSuitParent &&
temp.clientWidth > 0 &&
temp.clientWidth < targetWidth * 1.2 &&
temp.clientHeight > 0 &&
temp.clientHeight < targetHeight * 1.2) {
//用非全屏状态下scrollHeight来判断可以准确找到抖音类网站的合适视频容器
if (document.fullscreenElement) {
//全屏时视觉尺寸合适都可以用，youtube全屏就有滚动高度超出限制的元素
//suitParents保存适合的尺寸的祖先节点
suitParents.push(temp);
} else {
//非全屏时要判断一下滚动高度
if (temp.scrollHeight < targetHeight * 1.2) {
suitParents.push(temp);
} else {
findAllSuitParent = true;
scrollHeightOut = true;
}
}
}
//循环结束条件
if (temp.tagName === "BODY" ||
temp.tagName === "HTML" ||
!temp.parentElement) {
//已找到所有符合条件的祖先节点，取最后一个
if (suitParents.length > 0) {
biggestContainer = suitParents[suitParents.length - 1];
}
//没有任何大小合适的祖先元素，且自身不是视频元素，那也肯定不是视频操控层
else if (target.tagName !== "VIDEO") {
return;
}
//gc
suitParents = null;
break;
}
}
//寻找视频元素
//当触摸的不是视频元素，可能是非视频相关组件，或视频的操控层
if (target.tagName !== "VIDEO") {
//尝试获取视频元素
let videoArray = biggestContainer.getElementsByTagName("video");
if (videoArray.length > 0) {
videoElement = videoArray[0];
//找到视频元素后，可以判断是否可能是短视频
//非全屏状态下，非iframe内视频，若视频操作层或视频占据大半的屏幕，判断为短视频
//tiktok没有视频控件，判断这个防止有页面的预览视频铺满了屏幕，这一项只能判断到没有框架的视频
if (!document.fullscreenElement &&
top === window &&
!videoElement.controls &&
scrollHeightOut &&
target.clientHeight > window.innerHeight * 0.8) {
maybeTiktok = true;
}
//如果是视频外很大的容器绝非我们想要的
//操作层除了短视频没见过高度高视频这么多的，大概率不是视频操控层
if (!maybeTiktok && targetHeight > videoElement.clientHeight * 1.5) {
//不是合适的操作层
return;
}
if (videoArray.length > 1) {
console.log("触摸位置找到不止一个视频。");
}
} else {
//非视频相关组件
return;
}
}
//触摸的是视频元素，则一切清晰明了
else {
videoElement = target;
}
//用于比较单击后，视频的播放状态，如果单击暂停，则恢复播放
let playing = !videoElement.paused;
//下面两个连通tiktok变量3个参数用于判断是否要执行touchmove事件处理器
//小于30s当做预览视频，在网页上的视频列表可能存在，不要让他们影响网页滚动
let sampleVideo = false;
let videoReady = false;
let videoReadyHandler = function () {
videoReady = true;
if (videoElement.duration < 30) {
sampleVideo = true;
}
};
if (videoElement.readyState > 0) {
videoReadyHandler();
} else {
videoElement.addEventListener("loadedmetadata", videoReadyHandler, {once: true});
}
//一个合适尺寸的最近祖先元素用于显示手势信息与全屏按钮
let componentContainer = findComponentContainer();
//指示器元素
let notice;
//视频快进快退量
let timeChange = 0;
//1表示右滑快进，2表示左滑快退，方向一旦确认就无法更改
let direction;
//优化a标签导致的长按手势中断问题（许多网站的视频列表的预览视频都是由a标签包裹）
makeTagAQuiet();
//禁止长按视频呼出浏览器菜单，为长按倍速做准备（没有视频框架的视频需要）
if (!videoElement.getAttribute("disable_contextmenu")/*只添加一次监听器*/) {
videoElement.addEventListener("contextmenu", (e) => {
e.preventDefault();
});
videoElement.setAttribute("disable_contextmenu", true);
}
//禁止图片长按呼出浏览器菜单和拖动（部分框架视频未播放时，触摸到的是预览图，抖音类播放时摸到的都是图片）
if (target.tagName === "IMG") {
target.draggable = false;
if (!target.getAttribute("disable_contextmenu")) {
target.addEventListener("contextmenu", (e) => {
e.preventDefault();
});
target.setAttribute("disable_contextmenu", true);
}
}
let sharedCSS = "border-radius:4px;z-index:99999;opacity:0.5;background-color:black;color:white;" +
"display:flex;justify-content:center;align-items:center;text-align:center;user-select:none;";
let haveControls = videoElement.controls;
let longPress = false;
//长按倍速定时器
let rateTimer = setTimeout(() => {
videoElement.playbackRate = 4;
videoElement.controls = false;
//禁止再快进快退
target.removeEventListener("touchmove", touchmoveHandler);
//显示notice
notice.innerText = "x4";
notice.style.display = "flex";
longPress = true;
rateTimer = null;
//显示调速按钮
//仅在全屏时触发
if (!document.fullscreenElement || videoElement.readyState === 0 || !GM_getValue("speed")) {
return;
}
let speedBtns = componentContainer.getElementsByClassName("me-speed-btn");
let speedBtn;
if (speedBtns.length > 0) {
speedBtn = speedBtns[0];
speedBtn.style.display = "flex";
} else {
speedBtn = document.createElement("div");
speedBtn.className = "me-speed-btn";
speedBtn.style.cssText = sharedCSS + "position:absolute;width:30px;height:30px;font-size:18px;";
speedBtn.style.top = "50px";
speedBtn.style.right = "20px";
speedBtn.textContent = "速";
componentContainer.appendChild(speedBtn);
speedBtn.addEventListener("click", showSpeedMenu);
}
setTimeout(() => {
speedBtn.style.display = "none";
}, 3000);
window.addEventListener("resize", () => {
speedBtn.style.display = "none";
}, {once: true});
function showSpeedMenu() {
speedBtn.style.display = "none";
let containers = componentContainer.getElementsByClassName("me-speed-container");
let container;
if (containers.length > 0) {
container = containers[0];
container.style.display = "flex";
} else {
container = document.createElement("div");
//在一次全屏状态中不会重复创建容器
container.className = "me-speed-container";
componentContainer.appendChild(container);
let css;
//横屏竖屏按钮显示位置不一样
if (videoElement.videoHeight > videoElement.videoWidth) {
css = `flex-direction:column;top:0;bottom:0;left:${(window.innerWidth * 2) / 3 + 40}px`;
} else {
css = `flex-direction:row;left:0;right:0;top:${(window.innerHeight / 3) - 30}px`;
}
container.style.cssText = "display:flex;position:absolute;flex-wrap:nowrap;z-index:99999;justify-content:center;" + css;
const values = [0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 3, 4, 5, 6];
//创建按钮
values.forEach(value => {
const button = document.createElement('div');
container.appendChild(button);
button.className = 'button';
button.textContent = value + "";
button.style.cssText = sharedCSS + "width:40px;height:30px;margin:2px;font-size:18px;";
button.addEventListener('click', () => {
container.style.display = "none";
videoElement.playbackRate = value;
});
});
}
//触摸空白处关闭container
target.addEventListener("touchstart", () => {
container.style.display = "none";
}, {once: true});
window.addEventListener("resize", () => {
container.style.display = "none";
}, {once: true});
}
}, 800);
//有些网站预览视频位置实际在屏幕之外，需要加上平移的数值
let screenWidth = screen.width;
let componentMoveLeft = componentContainer.offsetLeft;
let moveNum = Math.floor(componentMoveLeft * 1.1 / screenWidth);
//添加指示器元素
let notices = componentContainer.getElementsByClassName("me-notice");
if (notices.length === 0) {
notice = document.createElement("div");
notice.className = "me-notice";
let noticeWidth = 110;//未带单位，后面需要加单位
let noticeTop = Math.round(componentContainer.clientHeight / 6);
let noticeLeft = Math.round(moveNum * screenWidth + componentContainer.clientWidth / 2 - noticeWidth / 2);
notice.style.cssText = sharedCSS + "font-size:16px;position:absolute;display:none;letter-spacing:normal;";
notice.style.width = noticeWidth + "px";
notice.style.height = "30px";
notice.style.left = noticeLeft + "px";
notice.style.top = noticeTop + "px";
componentContainer.appendChild(notice);
//每次全屏与退出全屏需要重新计算notice的位置
window.addEventListener("resize", () => {
notice.remove();
}, {once: true});
} else {
notice = notices[0];
}
//滑动流畅的关键1，passive为false代表处理器内调用preventDefault()不会被浏览器拒绝
//mdn：文档级节点 Window、Document 和 Document.body默认是true，其他节点默认是false
target.addEventListener("touchmove", touchmoveHandler/*, {passive: false}*/);
target.addEventListener("touchend", touchendHandler, {once: true});
function makeTagAQuiet() {
for (let element of allParents) {
if (element.tagName === "A" &&
!element.getAttribute("disable_menu_and_drag")) {
//禁止长按菜单
element.addEventListener("contextmenu", (e) => {
e.preventDefault();
});
//禁止长按拖动
element.draggable = false;
element.setAttribute("disable_menu_and_drag", true);
//没有长按菜单，用target="_blank"属性来平替
element.target = "_blank";
//不可能a标签嵌套a标签吧
break;
}
}
allParents = null;
}
function findComponentContainer() {
let temp = videoElement;
while (true) {
//寻找最近的有长宽数值的祖先节点
if (temp.parentElement.clientWidth > 0 &&
temp.parentElement.clientHeight > 0) {
return temp.parentElement;
} else {
temp = temp.parentElement;
}
}
}
function getClearTimeChange(timeChange) {
timeChange = Math.abs(timeChange);
let minute = Math.floor(timeChange / 60);
let second = timeChange % 60;
return (minute === 0 ? "" : (minute + "min")) + second + "s";
}
function touchmoveHandler(moveEvent) {
// console.log("手指移动");
//触摸屏幕后，0.8s内如果有移动，清除长按定时事件
if (rateTimer) {
clearTimeout(rateTimer);
rateTimer = null;
}
if (maybeTiktok || sampleVideo || !videoReady) {
return;
}
//滑动流畅的关键2
moveEvent.preventDefault();
if (moveEvent.touches.length === 1) {
//仅支持单指触摸，记录位置
let temp = Math.ceil(moveEvent.touches[0].clientX);
//x轴没变化，y轴方向移动也会触发，要避免不必要的运算
if (temp === endX) {
return;
} else {
endX = temp;
}
endY = Math.ceil(moveEvent.touches[0].screenY);
//console.log("移动到" + endX + "," + endY);
}
//由第一次移动确认手势方向，就不再变更
//10个像素起
if (endX > startX + 10) {
//快进
if (!direction) {
//首次移动，记录方向
direction = 1;
}
if (direction === 1) {
//方向未变化
timeChange = endX - startX - 10;
} else {
timeChange = 0;
}
} else if (endX < startX - 10) {
//快退
if (!direction) {
//首次移动，记录方向
direction = 2;
}
if (direction === 2) {
//方向未变化
timeChange = endX - startX + 10;
} else {
timeChange = 0;
}
} else if (timeChange !== 0) {
timeChange = 0;
} else {
return;
}
if (notice.style.display === "none" /*已经显示了就不管怎么滑动了*/ &&
Math.abs(endY - startY) > Math.abs(endX - startX)) {
//垂直滑动不显示
timeChange = 0;
return;
}
//未到阈值不显示
if (direction) {
notice.style.display = "flex";
notice.innerText = (direction === 1 ? ">>>" : "<<<") + getClearTimeChange(timeChange);
}
}
function touchendHandler() {
if (notice) notice.style.display = "none";
// console.log("手指抬起");
if (GM_getValue("voiced")) {
videoElement.muted = false;
}
//所有非短视频自带的全视频区域的单击暂停，给他重新播放，手机不适合单击暂停，需要暂停的使用暂停按钮即可
//带延迟是为了让网页自带的js先执行，videoElement.paused的状态才会判断准确
setTimeout(() => {
if (playing && videoElement.paused && !maybeTiktok) {
videoElement.play();
}
}, 200);
//一般有chrome自带视频控件的就是没用框架的视频
//需要替换全屏按钮，不然无法显示快进指示器
//非长按后手指抬起时才添加全屏按钮
if (!longPress && videoElement.controls && !document.fullscreenElement) {
let btns = componentContainer.getElementsByClassName("me-fullscreen-btn");
let btn;
if (btns.length === 0) {
btn = document.createElement("div");
btn.style.cssText = sharedCSS + "position:absolute;width:40px;padding:2px;font-size:14px;font-weight:bold;" +
"box-sizing:border-box;border:1px solid white;white-space:normal;line-height:normal;";
btn.innerText = "点我\n全屏";
//设置id是为了防止多次点击重复添加
btn.className = "me-fullscreen-btn";
let divHeight = 40;
btn.style.height = divHeight + "px";
btn.style.top = Math.round(componentContainer.clientHeight / 2 - divHeight / 2 - 10) + "px";
btn.style.left = Math.round(moveNum * screenWidth + componentContainer.clientWidth * 5 / 7) + "px";
componentContainer.append(btn);
btn.addEventListener("touchstart", async function () {
btn.style.display = "none";
await componentContainer.requestFullscreen();
});
//屏蔽原生全屏按钮
videoElement.controlsList = ["nofullscreen"];
} else {
btn = btns[0];
btn.style.display = "flex";
}
setTimeout(() => {
btn.style.display = "none";
}, 2000);
}
//滑动长按判断
if (endX === startX) {
//长按
//console.log("长按");
if (rateTimer) {
//定时器也许已经执行，此时清除也没关系
clearTimeout(rateTimer);
}
if (longPress) {
//长按快进结束如果原本有控制器，则恢复
videoElement.controls = haveControls;
videoElement.playbackRate = 1;
}
} else {
if (timeChange !== 0) {
//快进
videoElement.currentTime += timeChange;
}
//console.log("x轴移动" + (endX - startX));
//console.log("y轴移动" + (endY - startY));
}
target.removeEventListener("touchmove", touchmoveHandler);
}
});
}
//全屏横屏模块
//将浏览器锁定方向的方法改掉，防止网页自带的js执行，当此脚本执行时又把他改回来
//这是因为遇到有网站锁定为any后，且后于此脚本执行，那么手机倒着拿就会直接退出全屏
window.tempLock = screen.orientation.lock;
let myLock = function () {
console.log("网页自带js试图执行lock()")
};
screen.orientation.lock = myLock;
//顶层窗口负责执行横屏，因为iframe可能开启了沙箱机制无法锁定方向并无法修改
//使用油猴的变量监听，绕开iframe跨域限制
if (top === window) {
GM_setValue("doLock", false);
GM_addValueChangeListener("doLock", async function (key, oldValue, newValue) {
if (document.fullscreenElement && newValue) {
//恢复lock()
screen.orientation.lock = window.tempLock;
await screen.orientation.lock("landscape");
//变向结束再次修改lock()
screen.orientation.lock = myLock;
GM_setValue("doLock", false);
}
});
}
//全屏后触发resize次数，如果有iframe，每个document可不是共用这个值
let inTimes = 0;
//利用window的resize事件监听全屏动作，监听document常用的fullscreenchange事件可能因为后代停止传播而捕获不到
window.addEventListener("resize", () => {
//resize事件或先于全屏事件触发，此时判断是否全屏将出错，所以得设置延迟
setTimeout(fullscreenHandler, 500);
});
function fullscreenHandler() {
//获取全屏元素，查找视频，判断视频长宽比来锁定方向
let _fullscreenElement = document.fullscreenElement;
if (_fullscreenElement) {
//如果全屏元素是iframe，说明不是视频所在的document执行到这，记录也没用
if (_fullscreenElement.tagName === "IFRAME") {
return;
}
//inTimes==1可代表全屏
inTimes++;
} else if (inTimes > 0) {
//此代码块可代表退出全屏
inTimes = 0;
} else {
//退出全屏时多余的触发或者是其他与全屏无关的元素触发resize
return;
}
if (inTimes !== 1) {
return;
}
let videoElement;
if (_fullscreenElement.tagName !== "VIDEO") {
//最大的全屏元素不是视频本身，需要寻找视频元素
let videoArray = _fullscreenElement.getElementsByTagName("video");
if (videoArray.length > 0) {
videoElement = videoArray[0];
if (videoArray.length > 1) {
console.log("全屏元素内找到不止一个视频。");
}
}
} else videoElement = _fullscreenElement;
//也可能不是视频在全屏
if (videoElement) {
let changeHandler = function () {
//高度小于宽度，需要转向，landscape会自动调用陀螺仪
if (videoElement.videoHeight < videoElement.videoWidth) {
//开启沙盒机制的iframe修改sandbox属性无效，需要顶层窗口调用方向锁定
GM_setValue("doLock", true);
}
};
//视频未加载，在加载后再判断需不需要转向
if (videoElement.readyState < 1) {
videoElement.addEventListener("loadedmetadata", changeHandler, {once: true});
} else {
changeHandler();
}
}
}
})();