TypesScript programming language XML file reader XML file writer feature #ChatGPT

TypesScript-Xml-file-reader-Xml-file-writer

import * as fs from 'fs';
import * as xml2js from 'xml2js';

// Read the XML file
const xml = fs.readFileSync('file.xml', 'utf-8');

// Convert the XML to a JavaScript object
xml2js.parseString(xml, (err, result) => {
  if (err) {
    console.error(err);
    return;
  }
  
  // Do something with the result object
  console.log(result);
});

import * as fs from 'fs';
import * as xml2js from 'xml2js';

// Read the XML file
const xml = fs.readFileSync('file.xml', 'utf-8');

// Convert the XML to a JavaScript object
xml2js.parseString(xml, (err, result) => {
  if (err) {
    console.error(err);
    return;
  }
  
  // Do something with the result object
  console.log(result);
});

import * as fs from 'fs';
import * as xmlbuilder from 'xmlbuilder2';

// Create the XML document
const xml = xmlbuilder.create('root')
  .ele('child')
    .att('foo', 'bar')
    .txt('Hello, World!')
  .end({ prettyPrint: true });

// Write the XML document to a file
fs.writeFileSync('file.xml', xml);

Code Editor URL

Angular TypeScript Xml File Reader Xml File Writer Application URL

Conclusion March 14th 2022
[Angular + XML W3Schools Editor URL](https://stackblitz.com/edit/angular-kezwuw?file=src/index.html)

[Angular + XML W3Schools Application URL](https://angular-kezwuw.stackblitz.io)

[DomParser MDN Error Input Validation](https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString)

export interface Book {
  title: string;
  author: string;
  year: number;
}

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Book } from './book';

@Injectable({
  providedIn: 'root'
})
export class BookService {

  private xmlUrl = 'assets/books.xml';

  constructor(private http: HttpClient) { }

  getBooks(): Promise<Book[]> {
    return this.http.get(this.xmlUrl, { responseType: 'text' })
      .toPromise()
      .then(xml => {
        const parser = new DOMParser();
        const xmlDoc = parser.parseFromString(xml, 'text/xml');
        const books = Array.from(xmlDoc.getElementsByTagName('book'))
          .map(bookNode => ({
            title: bookNode.getElementsByTagName('title')[0].textContent,
            author: bookNode.getElementsByTagName('author')[0].textContent,
            year: parseInt(bookNode.getElementsByTagName('year')[0].textContent, 10)
          }));
        return books;
      });
  }

  addBook(book: Book): Promise<void> {
    // TODO: Implement add book logic
    return Promise.resolve();
  }

  updateBook(book: Book): Promise<void> {
    // TODO: Implement update book logic
    return Promise.resolve();
  }

  deleteBook(title: string): Promise<void> {
    // TODO: Implement delete book logic
    return Promise.resolve();
  }
}

import { Component, OnInit } from '@angular/core';
import { Book } from '../book';
import { BookService } from '../book.service';

@Component({
  selector: 'app-book-list',
  templateUrl: './book-list.component.html',
  styleUrls: ['./book-list.component.css']
})
export class BookListComponent implements OnInit {

  books: Book[];

  constructor(private bookService: BookService) { }

  ngOnInit() {
    this.bookService.getBooks()
      .then(books => this.books = books);
  }

  addBook() {
    // TODO: Implement add book logic
  }

  updateBook(book: Book) {
    // TODO: Implement update book logic
  }

  deleteBook(title: string) {
    // TODO: Implement delete book logic
  }

}

<h2>Books</h2>
<ul>
  <li *ngFor="let book of books">
    {{ book.title }} by {{ book.author }} ({{ book.year }})
  </li>
</ul>