Read and write JSON files using Node.js

read-write-json-node.js

const fs = require("fs");

const books = [
  {
    title: "The Great Gatsby",
    author: "F. Scott Fitzgerald",
  },
  {
    title: "Frankenstein",
    author: "Mary Shelley",
  },
  {
    title: "The Call of the Wild",
    author: "Jack London",
  },
];

const data = JSON.stringify(books);

fs.writeFile("./data.json", data, "utf8", (error) => {
  if (error) {
    console.log(error);
  } else {
    console.log("writeFile complete");
  }
});

fs.readFile("./data.json", "utf8", (error, json) => {
  if (error) {
    console.log(error);
    return;
  }
  try {
    const books = JSON.parse(json);
    books.forEach((book) => {
      console.log(`${book.title} by ${book.author}`);
    });
  } catch (error) {
    console.log(error);
  }
});

Source => https://w3collective.com/node-read-write-json/