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Auto switch Chinese/English
// ==UserScript==
// @name Google Translate Auto Languages
// @name:zh-CN Google谷歌翻译自动中英互译
// @description Auto switch Chinese/English
// @description:zh-CN 自动切换目标语言为中/英文
// @namespace https://greasyfork.org/users/197529
// @version 1.6
// @author kkocdko
// @license Unlicense
// @match *://translate.google.com/*
// @match *://translate.google.cn/*
// @noframes
// ==/UserScript==
"use strict";
const firstLangRule = /English|英语/;
const firstLang = "en";
const secondLang = "zh-CN";
const detectTab = document.querySelector("[role=tab]");
new MutationObserver(() => {
const isFirstLang = firstLangRule.test(detectTab.textContent);
const lang = isFirstLang ? secondLang : firstLang;
const selector = `[data-popup-corner]~* [data-language-code=${lang}]`;
const tab = document.querySelector(selector);
if (tab.getAttribute("aria-selected") !== "true") tab.click();
}).observe(detectTab, { characterData: true, subtree: true });
if (detectTab.getAttribute("aria-selected") !== "true") detectTab.click();