📜  db.json - Javascript (1)

📅  最后修改于: 2023-12-03 15:30:23.289000             🧑  作者: Mango

db.json – A Lightweight, Serverless JSON Database for JavaScript

db.json logo

If you're looking for a lightweight, serverless JSON database solution for your JavaScript projects, db.json is a great option to consider. With no configuration or setup required, you can immediately start using db.json to store and retrieve data in your applications.

Features
  • Zero configuration: There's no need to set up a database server, define tables, or create a schema. Simply start using db.json right away.
  • No installation required: You don't need to install any additional packages or dependencies to use db.json, making it easy to add to your existing projects.
  • Lightweight: The entire db.json library weighs in at under 2KB, making it a lightweight and high-performance option for your applications.
  • JSON-based: Data is stored in a simple JSON format, making it easy to read and manipulate with JavaScript.
  • RESTful API: db.json provides a simple HTTP API for interacting with the database, making it easy to integrate with any framework or programming language.
Installation

To get started with db.json, simply download the library from the official GitHub repository and include it in your project:

<script src="path/to/db.json.js"></script>

You can also install db.json using npm:

npm install db.json --save
Usage

Here's an example of how to use db.json to store and retrieve data:

// Initialize the database
var db = new DbJson();

// Insert a record
db.insert({ name: "John Doe", age: 42 });

// Query the database
var result = db.query(function(record) {
  return record.age > 30;
});

// Print the results
console.log(result);

// Output: [{ name: "John Doe", age: 42 }]
API Reference
new DbJson()

Creates a new db.json instance.

DbJson.prototype.insert(record)

Inserts a record into the database.

  • record (object): The record to insert.
DbJson.prototype.count()

Returns the number of records in the database.

DbJson.prototype.query(callback)

Queries the database and returns the results.

  • callback (function): A function to evaluate each record. Should return true if the record matches the query, false otherwise.
DbJson.prototype.clear()

Clears all records from the database.

Conclusion

With its simplicity, flexibility, and lightweight design, db.json is a fantastic option for any JavaScript project that needs to store and retrieve data. Whether you're building a small web app or a large-scale enterprise application, db.json is a reliable and efficient solution that can help you get the job done quickly and easily.