Translate to Chinese automatically. youtube自动翻译中文简体

TranslateToChineseOnYouTube.user.js

// ==UserScript==
// @name         YouTube字幕自动选择翻译－>中文简体
// @namespace    http://tampermonkey.net/
// @version      1.2
// @description  translate to Chinese automatically. 自动点击字幕翻译到中文简体
// @author       qwertyuiop6
// @match        https://www.youtube.com/*
// @grant        none
// ==/UserScript==

(function(){
    const $=document.querySelector.bind(document);
    const $$=document.getElementsByClassName.bind(document);

    let video;

    if(!location.href.includes('watch')){
        document.addEventListener('click',e=>{
           console.log(e.target)
           if(e.target.closest('.ytd-rich-grid-media')){
             setTimeout(listenVideo,300)
           }
        },true)
    }else{
        listenVideo()
    }

    function listenVideo(){
        video=$('video');
        video.addEventListener('canplay', ()=>{
            $('.ytp-ad-skip-button-icon')?.click();
        })
        video.addEventListener('loadeddata',clickToTranslate)
    }


    function checkAndClick(){
        const findElem=findElemByText.bind($$("ytp-menuitem"))

        const sub=findElem("字幕");
        if (!sub) return false;
        sub.click();

        const subc = findElem("中文");
        if (subc) {
            subc.click();
            video.click();
        } else {
            const autoTrans = findElem("自动翻译");
            if (!autoTrans) return false;
            autoTrans.click();
            const autoTransC = findElem("中文（简体）");
            if (!autoTransC) return false;
            autoTransC.click();
        }
        return true;
    }

    function findElemByText(text) {
        for (const elem of this) {
            if (elem.innerText.includes(text)) {
                return elem
            }
        }
        return null
    }

    function clickToTranslate(){
        $('.ytp-subtitles-button[aria-pressed="false"]')?.click();
        const settingsButton=$('.ytp-settings-button');
        settingsButton.click();
        if(!checkAndClick()) settingsButton.click();
    }

})();