Simple classes handling an XML Object and XML Tags

xml.js

class XMLTag {
  constructor(name, value) {
    this.name = name;
    this.value = value;
    this.attributes = {}; //List of attributes (objects)
    this.children = [];
  }

  newTag(name, value) {
    this.tag = new XMLTag(name, value);
    this.children.push(this.tag);
    return this.tag;
  }

  setName(name) {
    this.name = name;
  }

  addAttribute(name, value) {
    this.attributes[name] = value;
  }

  print(level) {
    this.attributeString = '';
    for (let attribute of Object.entries(this.attributes)) {
      this.attributeString += `${attribute[0]}="${attribute[1]}" `;
    }
    this.string = '\t'.repeat(level) + `<${this.name}`;
    if (this.attributeString) {
      this.string += ` ${this.attributeString.trim()}>`
    } else {
      this.string += `>`
    }
    if (Object.entries(this.attributes).length > 0 || this.children.length > 0) {
      this.string += `\n`
    }
    if (this.value) {
      this.string += `${this.value}`
    } else if (this.children.length > 0) {
      for (let child of this.children) {
        this.string += `${child.print(level + 1)}`;
      }
    }
    this.string += `${this.value ? '' : '\t'.repeat(level) }</${this.name}>\n`;
    return `${this.string}`;
  }
}



class XMLObject {
  constructor() {
    this.root = new XMLTag()
  }

  getRoot() {
    return this.root;
  }

  print() {
    this.string = '';
    if (this.root) {
      this.string += `<${this.root.name}>`;
    }

    if (this.root.children.length > 0) {
      this.string += `\n`
    }

    if (this.root.children.length > 0) {
        for (let child of this.root.children) {
          this.string += `${child.print(1)}`;
        }
    }
    this.string += `</${this.root.name}>`;
    return this.string;
  }
}


let x = new XMLObject();
let root = x.getRoot();
root.setName('People');

let person = root.newTag('Person');
person.addAttribute('id', '2323');
person.addAttribute('DOB', '1/1/1901');

let firstName = person.newTag('FirstName', 'John');
let lastName = person.newTag('LastName', 'Smith');
let address = person.newTag('address');

address.newTag('street', '123 NW 45th street');
address.newTag('city', 'Gaithersburg');
address.newTag('zip', '21234');
address.newTag('state', 'MD');

console.log(x.print());