点击视频空白处切换播放暂停，左右方向键控制5秒快进快退，上下方向键切换2倍速和原速
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// ==UserScript==
// @name 延河课堂播放增强
// @namespace https://www.ordosx.tech/
// @version 1.3
// @description 点击视频空白处切换播放暂停，左右方向键控制5秒快进快退，上下方向键切换2倍速和原速
// @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()
})
const main = () => {
const mainPlayerVideo = document.querySelector('.main-player video')
const playerPanel = document.querySelector('.player-panel')
const playerMask = document.querySelector('.player-mask')
const pauseButton = document.querySelector('.controller-panel .head-container button')
if (!(mainPlayerVideo && playerPanel && playerMask)) {
setTimeout(main, 20)
} else {
playerPanel.onclick = () => {
pauseButton.click()
}
playerMask.onclick = () => {
pauseButton.click()
}
mainPlayerVideo.onratechange = () => {
document.querySelector('.playback-rates-text').innerText = `${mainPlayerVideo.playbackRate.toFixed(1)}X`
}
document.onkeydown = (e) => {
e.preventDefault()
switch (e.key) {
case 'ArrowLeft': // 左方向键快退五秒
mainPlayerVideo.currentTime -= 5
break
case 'ArrowRight': // 右方向键快进5秒
mainPlayerVideo.currentTime += 5
break
case 'ArrowUp': // 上方向键2倍速
document.querySelectorAll('video').forEach((e) => { e.playbackRate = 2 })
break
case 'ArrowDown': // 下方向键原速
document.querySelectorAll('video').forEach((e) => { e.playbackRate = 1 })
break
case ' ': // 空格暂停
pauseButton.click()
break
}
}
}
}
})()