js如何将对象手动拼接为xml文件

function objectToXml(obj, rootName) {
  let xml = '';
 
  // 添加 XML 声明
  xml += '<?xml version="1.0" encoding="UTF-8"?>';
 
  // 添加根元素标签
  xml += `<${rootName}>`;
 
  // 遍历对象属性，添加元素标签和属性
  for (const property in obj) {
    if (obj.hasOwnProperty(property)) {
      xml += '<' + property + '>';
 
      if (typeof obj[property] === 'object') {
        xml += objectToXml(new Object(obj[property]));
      } else {
        xml += obj[property];
      }
 
      xml += '</' + property + '>';
    }
  }
 
  // 添加根元素闭合标签
  xml += `</${rootName}>`;
 
  return xml;
}
 
const obj = {
  name: 'John',
  age: 30,
  dateOfBirth: {
    year: 1990,
    month: 3,
    day: 15
  }
};
 
const xml = objectToXml(obj, 'person');
console.log(xml);

输出结果：

<?xml version="1.0" encoding="UTF-8"?>
<person>
  <name>John</name>
  <age>30</age>
  <dateOfBirth>
    <year>1990</year>
    <month>3</month>
    <day>15</day>
  </dateOfBirth>
</person>