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编程导航视频增强

编程导航视频，通过键盘控制: 前进 后退 暂停 开始 全屏

// ==UserScript==
// @name         编程导航视频增强
// @namespace    http://tampermonkey.net/
// @version      2024-5-30
// @description  编程导航视频，通过键盘控制: 前进 后退 暂停 开始 全屏
// @author       xiaowang
// @match        https://www.code-nav.cn/course/*
// @icon         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
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    var isFullScreen = false;
    // 添加键盘事件监听器
    document.addEventListener('keydown', function(event) {
        const key = event.key;

        // 获取视频元素
        const video = document.querySelector('video');

        // 按下左键，将视频当前时间减去5秒
        if (key === 'ArrowLeft') {
            video.currentTime -= 5;
        }
        // 按下右键，将视频当前时间加上5秒
        else if (key === 'ArrowRight') {
            video.currentTime += 5;
        }
        // 按下空格键，播放或暂停视频
        else if (key === ' ') {
            if (video.paused) {
                video.play();
            } else {
                video.pause();
            }
        }
        // 按下组合键 Shift + F，全屏或退出全屏
        else if (key === 'F') {
            if (isFullScreen) {
                video.webkitExitFullscreen();
                isFullScreen = false;
            } else {
                video.webkitEnterFullscreen();
                isFullScreen = true;
            }
        }
    });
})();