有些飞书文档比较有价值，但是通常会比较敏感，权限被设置的很死，不能导出，还容易失踪，因此写了个脚本专门用于禁止复制/导出的情况下获取文本内容。

旧版飞书文档：

let running = true;
const text = {};
const scanText = () => {
  let cleared = false;
  const handler = () => {
    Array.from(document.querySelectorAll(".ace-line")).forEach((node) => {
      const id = parseInt(/magicdomid-(\d+)/.exec(node.id)[1]);
      if (!(id in text)) console.log(`part ${id} added`);
      text[id] = Array.from(node.querySelectorAll("span[data-string]"))
        .map((span) => span.textContent)
        .join("");
    });
    if (!running && !cleared) {
      clearInterval(handler);
      console.log("stop");
      cleared = true;
    }
  };
  setInterval(handler, 100);
};


const getText = () => {
  running = false;
  const resultText = Object.entries(text)
    .sort((a, b) => parseInt(a[0]) - parseInt(b[0]))
    .map((a) => a[1])
    .join("\n");
  copy(resultText);
  console.log("text copied to clipboard");
  return resultText;
};

scanText();

新版飞书文档：

let running = true;
const block = {};

const extractBlockText = (node) => Array.from(node.querySelectorAll("span[data-string]")).map((span) => span.textContent).join("");

const scanText = () => {
  let cleared = false;
  const handler = () => {
    Array.from(document.querySelectorAll(".block")).forEach((node) => {
      const id = parseInt(node.getAttribute('data-block-id'));
      if (id in block) return;
      const blockClass = node.classList[1];
      if (blockClass === 'docx-text-block') {
        block[id] = extractBlockText(node);
      } else if (/docx-heading(\d)-block/.exec(blockClass)) {
        const h = /docx-heading(\d)-block/.exec(blockClass)[1];
        block[id] = '#'.repeat(h) + ' ' + extractBlockText(node);
      } else if (blockClass === 'docx-bullet-block') {
        block[id] = '* ' + extractBlockText(node);
      } else {
        return
      }
      node.style.backgroundColor = '#89D961';
    });


    if (!running && !cleared) {
      clearInterval(handler);
      console.log("stop");
      cleared = true;
    }
  };
  setInterval(handler, 100);
};


const getText = () => {
  running = false;
  const resultText = Object.entries(block)
    .sort((a, b) => parseInt(a[0]) - parseInt(b[0]))
    .map((a) => a[1])
    .join("\n\n");
  copy(resultText);
  console.log("text copied to clipboard");
  return resultText;
};

scanText();

由于飞书文档是动态加载的（而且window.scroll不能用），需要手动滑动过整篇文档保证所有内容都被读取到。

然后在控制台执行 getText()将内容保存到剪贴板 。