APIs

What is an API?

• API - Application programming interface
• An API specifies how software components should interact.

What is JSON?

• JSON - JavaScript Object notation
• It is based on JS object literals
• It is data representation format
• lightweight format for storing and transporting data
• Often used to exchange data between client and server
• "Self-describing" and easy to understand

JSON Data Types

• Strings
• Number
• Boolean
• Array
• Object
• Null

JSON rules

• It must contain key/value pairs
• Must use double quotes for keys and strings
• data must be a valid JSON data type
• data must be seperated by commas
• Curly brackets holds objects and square brackets hold arrays

const user = {
    name: "Tylor",
    age: 30
}
const json = JSON.stringify(user)
console.log(json)
//Output:
{"name":"Tylor","age":30}

Public API's

Free Public APIs

Making API Calls

Making an HTTP Request or REST API call in NodeJS

Create API's

DreamFactory API

Mocking API Calls

• Mocky