Quick definition · 2 min Coding term
JSON
JSON (JavaScript Object Notation) is a simple text format for structured data, built from keys and values that both people and programs can read.
Think of it like
Like a labelled form: every field has a name and a value, so anything reading it knows exactly what each piece means.
Example
A user might be stored as {"name": "Ada", "age": 36}. Most websites and APIs send data back and forth as JSON.
Why it matters
JSON is the default way apps, APIs, and config files exchange data. You will see it almost everywhere you build.
Where you’ll see it