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Chapter 3.

Sending JSON Responses

In this section of the book, we’re going to update our API handlers so that they return JSON responses instead of just plain text.

JSON (which is an acronym for JavaScript Object Notation) is a human-readable text format which can be used to represent structured data. As an example, in our project a movie could be represented with the following JSON:

    "id": 123,
    "title": "Casablanca",
    "runtime": 102,
    "genres": [
    "version": 1

To give you a very quick overview of the JSON syntax…


If you’ve not used JSON at all before, then this beginner’s guide provides a comprehensive introduction and I recommend reading it before following on.

In this section of the book you’ll learn: