有没有可能用扩展太“重”了,一个油猴脚本:
```
// ==UserScript==
// @
name         维基百科跨语言跳转助手(改进版)
// @
namespace    http://tampermonkey.net/// @
version      1.1
// @
description  在维基百科页面显示对应语言版本的链接,从语言链接栏获取准确 URL
// @
author       ChatGPT
// @
match        https://zh.wikipedia.org/*// @
match        https://en.wikipedia.org/*// @
match        https://*.wikipedia.org/*
// @
icon         https://www.wikipedia.org/static/favicon/wikipedia.ico// @
grant        none
// @
license      MIT
// ==/UserScript==
(function() {
    'use strict';    
    // 添加自定义样式
    const style = document.createElement('style');
    style.textContent = `
        .wp-crosslang-container {
            display: inline-block;
            margin-left: 12px;
            vertical-align: middle;
        }        
        .wp-crosslang-btn {
            background: #f8f9fa;
            border: 1px solid #a2a9b1;
            border-radius: 2px;
            padding: 3px 8px;
            font-size: 12px;
            color: #0645ad;
            cursor: pointer;
            transition: all 0.2s ease;
            text-decoration: none;
            display: inline-block;
        }        
        .wp-crosslang-btn:hover {
            background: #fff;
            border-color: #0645ad;
            color: #0645ad;
            text-decoration: none;
        }        
        .wp-crosslang-btn:active {
            background: #f0f0f0;
        }        
        .wp-crosslang-loading {
            opacity: 0.7;
            cursor: wait;
        }        
        @
media screen and (max-width: 768px) {
            .wp-crosslang-container {
                display: block;
                margin-left: 0;
                margin-top: 8px;
            }
        }
    `;
    document.head.appendChild(style);    
    // 获取对应语言的链接
    function getLanguageLink(targetLang) {
        // 在侧边栏语言列表中找到目标语言链接
        const langList = document.querySelector('#p-lang .wbc-editpage, #p-lang .wb-langlinks-link');
        if (langList) {
            const langLinks = document.querySelectorAll('#p-lang li a');
            for (const link of langLinks) {
                const href = link.getAttribute('href');
                const lang = link.getAttribute('lang') || link.getAttribute('hreflang') || '';
                const text = link.textContent.trim();                
                if (lang === targetLang || 
                    (targetLang === 'en' && text === 'English') ||
                    (targetLang === 'zh' && text === '中文')) {
                    return href;
                }
            }
        }        
        // 尝试在页面底部的语言链接中找到
        const interwikiLinks = document.querySelectorAll('.interlanguage-link a');
        for (const link of interwikiLinks) {
            const lang = link.getAttribute('lang') || link.getAttribute('hreflang') || '';
            const text = link.textContent.trim();
            const href = link.getAttribute('href');            
            if (lang === targetLang || 
                (targetLang === 'en' && text === 'English') ||
                (targetLang === 'zh' && text === '中文')) {
                return href;
            }
        }        
        return null;
    }    
    // 获取当前语言和目标语言
    function getLanguages() {
        const hostname = window.location.hostname;        
        if (hostname.includes('zh.') || hostname.includes('.zh.')) {
            return { current: 'zh', target: 'en', targetName: 'English' };
        } else if (hostname.includes('en.') || hostname.includes('.en.')) {
            return { current: 'en', target: 'zh', targetName: '中文' };
        }        
        // 默认情况
        return { current: 'en', target: 'zh', targetName: '中文' };
    }    
    // 创建跳转按钮
    function createJumpButton(href, targetName) {
        const container = document.createElement('div');
        container.className = 'wp-crosslang-container';        
        const button = document.createElement('a');
        button.className = 'wp-crosslang-btn';
        button.href = href;
        button.target = '_blank';
        button.rel = 'noopener noreferrer';
        button.textContent = targetName;        
        // 添加点击事件
        button.addEventListener('click', function(e) {
            console.log(`跳转到${targetName}版维基百科`);
        });        
        container.appendChild(button);
        return container;
    }    
    // 创建加载中的按钮
    function createLoadingButton(targetName) {
        const container = document.createElement('div');
        container.className = 'wp-crosslang-container';        
        const button = document.createElement('span');
        button.className = 'wp-crosslang-btn wp-crosslang-loading';
        button.textContent = `加载${targetName}...`;        
        container.appendChild(button);
        return container;
    }    
    // 主函数
    function init() {
        // 获取语言信息
        const { target, targetName } = getLanguages();        
        // 获取标题元素
        const titleElement = document.querySelector('#firstHeading, .mw-first-heading, .firstHeading, h1');
        if (!titleElement) {
            console.log('无法找到标题元素');
            return;
        }        
        // 先创建加载中的按钮
        const loadingButton = createLoadingButton(targetName);
        titleElement.appendChild(loadingButton);        
        // 尝试获取语言链接
        const langLink = getLanguageLink(target);        
        if (langLink) {
            // 移除加载按钮,添加实际链接按钮
            titleElement.removeChild(loadingButton);
            const button = createJumpButton(langLink, targetName);
            titleElement.appendChild(button);
        } else {
            // 没有找到对应语言链接,更新按钮状态
            loadingButton.querySelector('span').textContent = `无${targetName}版本`;
            loadingButton.querySelector('span').classList.remove('wp-crosslang-loading');
        }
    }    
    // 页面加载完成后执行
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', init);
    } else {
        init();
    }
})();
```