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单击网页中的LaTeX公式，将其复制到剪切板，可以选择直接复制成mathtype对象或者是latex源码
// ==UserScript==
// @name 复制LaTex公式，支持ChatGPT/DeepSeek/wikipedia/知乎等多个网站
// @namespace http://tampermonkey.net/
// @version 1.1.3
// @license GPLv3
// @description 单击网页中的LaTeX公式，将其复制到剪切板，可以选择直接复制成mathtype对象或者是latex源码
// @description:en Click on the LaTeX formula on the webpage and copy it to the clipboard. You can choose to directly copy it as a mathtype object or the LaTeX source code
// @author S1gn
// @match *://*.wikipedia.org/*
// @match *://*.zhihu.com/*
// @match *://*.chatgpt.com/*
// @match *://*.moonshot.cn/*
// @match *://*.stackexchange.com/*
// @match *://*.deepseek.com/*
// @icon https://i.miji.bid/2025/02/16/97ff538f8b0b1b5a3c2f02ad179fd6ea.png
// @require https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.jst
// ==/UserScript==
(function() {
'use strict';
// 插入样式表
const css = `
.latex-tooltip { position: fixed; background-color: rgba(0, 0, 0, 0.7); color: #fff; padding: 5px 10px; border-radius: 5px; font-size: 11px; z-index: 1000; opacity: 0; transition: opacity 0.2s; pointer-events: none; }
.latex-copy-success { position: fixed; bottom: 10%; left: 50%; transform: translateX(-50%); background-color: rgba(0, 0, 0, 0.7); color: #fff; padding: 10px 20px; border-radius: 5px; font-size: 12px; z-index: 1000; opacity: 0; transition: opacity 0.2s; pointer-events: none; }
.formula-buttons { position: fixed; top: 20px; right: 20px; z-index: 1000; }
.formula-buttons button { margin: 5px; padding: 10px; font-size: 14px; cursor: pointer; }
`;
const styleSheet = document.createElement("style");
styleSheet.type = "text/css";
styleSheet.innerText = css;
document.head.appendChild(styleSheet);
// 创建选择按钮
const buttonContainer = document.createElement('div');
buttonContainer.classList.add('formula-buttons');
document.body.appendChild(buttonContainer);
const types = ['LaTeX', 'MathML'];
types.forEach(type => {
const button = document.createElement('button');
button.textContent = `copy ${type}`;
button.addEventListener('click', () => {
currentCopyType = type;
alert(`selected：${type}`);
});
buttonContainer.appendChild(button);
});
let currentCopyType = 'LaTeX'; // 默认选择 LaTeX
// 创建提示框元素
const tooltip = document.createElement('div');
tooltip.classList.add('latex-tooltip');
document.body.appendChild(tooltip);
// 创建复制功能
function copyToClip(text) {
const input = document.createElement("input");
input.setAttribute("value", text);
document.body.appendChild(input);
input.select();
document.execCommand("copy");
document.body.removeChild(input);
}
// 创建 LaTeX 复制功能
function copyMLToClip(latexInput) {
// Reset MathJax
MathJax.texReset();
// Convert LaTeX to MathML
MathJax.tex2mmlPromise(latexInput).then(function(mathML) {
// Copy the MathML to clipboard
copyToClip(mathML);
showCopySuccessTooltip();
}).catch(function(error) {
console.error(error);
});
}
// 获取对象和公式方法
function getTarget(url) {
const targets = {
'wikipedia.org': {
elementSelector: 'span.mwe-math-element',
getLatexString: el => {
const math = el.querySelector('math');
return math ? math.getAttribute('alttext') : ''
}
},
'zhihu.com': {
elementSelector: 'span.ztext-math',
getLatexString: el => el.getAttribute('data-tex') || ''
},
'chatgpt.com': {
elementSelector: 'span.katex',
getLatexString: el => {
const annotation = el.querySelector('annotation');
return annotation ? annotation.textContent : '';
}
},
'deepseek.com': {
elementSelector: 'span.katex',
getLatexString: el => {
const annotation = el.querySelector('.katex-mathml annotation');
return annotation ? annotation.textContent : ''
}
},
'moonshot.cn': {
elementSelector: 'span.katex',
getLatexString: el => {
const annotation = el.querySelector('.katex-html annotation');
return annotation ? annotation.textContent : ''
}
},
'stackexchange.com': {
elementSelector: 'span.math-container',
getLatexString: el => {
const script = el.querySelector('script');
return script ? script.textContent : ''
}
}
// 其他网站的规则同样类似
};
for (const [key, value] of Object.entries(targets)) {
if (url.includes(key)) {
return value;
}
}
return null;
}
// 绑定事件到元素
function addHandler() {
const target = getTarget(window.location.href);
if (!target) return;
document.querySelectorAll(target.elementSelector).forEach(element => {
const latexString = target.getLatexString(element);
element.addEventListener('mouseenter', function () {
element.style.cursor = "pointer";
tooltip.textContent = latexString;
const rect = element.getBoundingClientRect();
tooltip.style.left = `${rect.left}px`;
tooltip.style.top = `${rect.top - tooltip.offsetHeight - 5}px`;
tooltip.style.opacity = '0.8';
});
element.addEventListener('mouseleave', function () {
element.style.cursor = "auto";
tooltip.style.opacity = '0';
});
element.addEventListener('click', function() {
if (currentCopyType === 'LaTeX') {
copyToClip(latexString);
} else if (currentCopyType === 'MathML') {
copyMLToClip(latexString);
}
showCopySuccessTooltip();
window.getSelection().removeAllRanges();
});
});
}
// 显示复制成功提示
function showCopySuccessTooltip() {
const copyTooltip = document.createElement("div");
copyTooltip.className = "latex-copy-success";
copyTooltip.innerText = `copy ${currentCopyType} success!`;
document.body.appendChild(copyTooltip);
// 强制浏览器重绘，确保样式应用
requestAnimationFrame(() => {
copyTooltip.style.opacity = "1"; // 激活显示
});
setTimeout(() => {
copyTooltip.style.opacity = "0";
setTimeout(() => {
document.body.removeChild(copyTooltip);
}, 200);
}, 1000);
}
// 监听页面加载或变化，绑定事件
document.addEventListener('DOMContentLoaded', addHandler);
new MutationObserver(addHandler).observe(document.documentElement, { childList: true, subtree: true });
})();