格式化 ​

// 获取根节点
const root = document.getElementsByTagName('dl')[0];
// 将真实DOM转化为虚拟DOM
let markdownText = '';
function createVirtualDOM(root) {
  const virtualDOM = [];
  const children = root.children;
  for (let i = 0; i < children.length; i++) {
    const child = children[i];
    const node = {
      tag: child.tagName,
      attrs: {},
      children: [],
    };
    // 标题(文件夹)
    if (child.tagName === 'H3') {
      markdownText += `
## ${child.innerText}
`;
    }
    // 链接
    if (child.tagName === 'A') {
      markdownText += `
  - [${child.innerText}](${child.href})
`;
    }
    if (child.attributes) {
      for (let j = 0; j < child.attributes.length; j++) {
        const attr = child.attributes[j];
        node.attrs[attr.name] = attr.value;
      }
    }
    if (child.children) {
      node.children = createVirtualDOM(child);
    }
    virtualDOM.push(node);
  }
  return virtualDOM;
}
const vDom = createVirtualDOM(root);
console.log(vDom);
console.log(markdownText);

// 获取所有Tag
var allTags = [
  ...new Set(
    [...document.querySelectorAll('.tag')].map((item) => item.innerText.trim())
  ),
];
// 获取所有文章
var listArray = [...document.querySelector('.entry-list').children];
var markDownText = '';
allTags.forEach((item) => {
  // 根据标签分类
  markDownText += `
## ${item}
`;
  listArray.forEach((listItem) => {
    // 渲染文章列表
    let title = listItem.querySelector('.title').innerText; // 标题
    const href =
      'https://juejin.cn/post/' +
      listItem.querySelector('.entry').getAttribute('data-entry-id'); // 链接
    if (!listItem.querySelector('.tag_list')) return;
    let tags = [...listItem.querySelector('.tag_list').children].map((tag) =>
      tag.innerText.trim()
    ); // 标签
    if (tags.length > 1)
      tags = tags.filter((tag) => tag !== '前端' && tag !== 'JavaScript'); // 多标签情况过滤前端和JavaScript
    if (tags.length === 0) tags = ['前端']; // 没有标签情况默认为前端
    if (tags.includes(item)) {
      markDownText += `
  - [${title}](${href})
`;
    }
  });
});
console.log(markDownText);

// 把收藏夹全部转发到微信文件传输助手[https://filehelper.weixin.qq.com/]
let markdownText = '';
const listArray = [...document.querySelectorAll('.msg-appmsg__content')];
listArray.forEach((item) => {
  const href = item.href; // 链接
  const content = item.innerText; // 内容
  markdownText += `
  - [${content.replaceAll('\n', '')}](${href})
`;
});
console.log(markdownText);