: For larger projects, consider libraries like lowdb , which provide a safer API for interacting with local JSON files. typicode/lowdb: Simple and fast JSON database - GitHub
const fs = require('fs'); const newPost = { id: Date.now(), title: "Direct Write", content: "Added via fs module" }; // 1. Read the existing file const data = fs.readFileSync('database.json'); const db = JSON.parse(data); // 2. Add the new post db.posts.push(newPost); // 3. Write it back fs.writeFileSync('database.json', JSON.stringify(db, null, 2)); Use code with caution. Copied to clipboard 3. Using Python Python is often used for simple JSON "databases":
You can now send a POST request to http://localhost:3000/posts using fetch in JavaScript: javascript database.json
If you want to treat database.json like a real REST API, json-server is the standard choice.
If you aren't using a server and just want to append data to the file locally using Node.js: javascript : For larger projects, consider libraries like lowdb
Create a database.json with an initial structure: { "posts": [] } Use code with caution. Copied to clipboard
: JSON requires double quotes for keys and string values; single quotes will cause an error. Add the new post db
: Always include a unique id for each post so you can find or delete it later.