写个JavaScript函数xmind

以下是一个自定义的用于生成XMind文件的JavaScript函数：

function generateXMind(topics) {
  const xmind = {
    version: '3.7.9',
    xmlns: 'urn:xmind:xmap:xmlns:content:2.0',
    meta: {
      name: 'My XMind Map',
      author: 'John Doe',
      created: '2021-01-01T00:00:00Z'
    },
    sheets: [
      {
        id: 'sheet1',
        title: 'Sheet 1',
        rootTopic: {
          id: 'root',
          title: 'Root Topic',
          children: []
        }
      }
    ]
  };

  // Add topics to the sheet's root topic
  for (const topic of topics) {
    xmind.sheets[0].rootTopic.children.push(topic);
  }

  // Convert the XMind object to XML
  const xml = `<?xml version="1.0" encoding="UTF-8"?>
    <xmap-content xmlns="${xmind.xmlns}" version="${xmind.version}">
      <meta>
        <title>${xmind.meta.name}</title>
        <author>${xmind.meta.author}</author>
        <created>${xmind.meta.created}</created>
      </meta>
      <sheet id="${xmind.sheets[0].id}" name="${xmind.sheets[0].title}">
        ${convertTopicToXML(xmind.sheets[0].rootTopic)}
      </sheet>
    </xmap-content>`;

  // Return the XML
  return xml;
}

function convertTopicToXML(topic) {
  let xml = `<topic id="${topic.id}" topic-type="attached" style="bubble" text="${topic.title}">`;

  if (topic.children.length > 0) {
    xml += '<children>';

    for (const child of topic.children) {
      xml += convertTopicToXML(child);
    }

    xml += '</children>';
  }

  xml += '</topic>';

  return xml;
}

该函数接受一个数组 `topics` 作为参数，该数组包含要添加到XMind文件的所有主题。该函数会生成一个XMind对象，然后将主题添加到主题图的根主题中，并将该对象转换为XML格式的XMind文件。