视频列表内一大节只显示一个链接，点击视频空白处切换播放暂停，左右方括号切换2倍速和原速，数字键1和2切换单双屏
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// ==UserScript==
// @name 延河课堂播放增强
// @namespace https://www.ordosx.tech/
// @version 1.6
// @description 视频列表内一大节只显示一个链接，点击视频空白处切换播放暂停，左右方括号切换2倍速和原速，数字键1和2切换单双屏
// @author OrdosX
// @match https://www.yanhekt.cn/session/*
// @icon https://www.google.com/s2/favicons?domain=yanhekt.cn
// @grant none
// ==/UserScript==
(function () {
'use strict'
window.addEventListener('load', () => {
main()
})
async function waitUntilExist (selectors) {
while (!document.querySelector(selectors)) {
await (new Promise(resolve => setTimeout(resolve, 20)))
}
}
async function main () {
await waitUntilExist('.player-panel')
const playerPanel = document.querySelector('.player-panel')
const mainPlayerVideo = document.querySelector('.main-player video')
const playerMask = document.querySelector('.player-mask')
const pauseButton = document.querySelector('.controller-panel .head-container button')
const singleScreen = document.querySelector('.tail-container img[alt=\'单屏\']').parentElement
const dualScreen = document.querySelector('.tail-container img[alt=\'双屏\']').parentElement
playerPanel.onclick = () => {
pauseButton.click()
}
playerMask.onclick = () => {
pauseButton.click()
}
mainPlayerVideo.onratechange = () => {
document.querySelector('.playback-rates-text').innerText = `${mainPlayerVideo.playbackRate.toFixed(1)}X`
}
document.onkeydown = (e) => {
switch (e.key) {
case ']': // 右方括号2倍速
e.preventDefault()
document.querySelectorAll('video').forEach((e) => { e.playbackRate = 2 })
break
case '[': // 左方括号原速
e.preventDefault()
document.querySelectorAll('video').forEach((e) => { e.playbackRate = 1 })
break
case '1': // 切换单屏（摄像头画面）
e.preventDefault()
singleScreen.click()
break
case '2': // 切换双屏（摄像头画面和PPT）
e.preventDefault()
dualScreen.click()
break
}
}
await waitUntilExist('.video-list-content li')
document.querySelectorAll('.video-list-content li').forEach(e => {
if (!e.nextSibling) return
const [week, day, rawPeriod] = e.textContent.split(' ')
const [sWeek, sDay, sRawPeriod] = e.nextSibling.textContent.split(' ')
const period = parseInt(rawPeriod.match(/[0-9]+/)[0])
const sPeriod = parseInt(sRawPeriod.match(/[0-9]+/)[0])
if (week === sWeek && day === sDay && period - sPeriod === 1) {
e.hidden = true
}
})
}
})()