null

When a schema specifies a type of null, it has only one acceptable value: null.

It's important to remember that in JSON, null isn't equivalent to something being absent. See Required Properties for an example.

Language-specific info:

Python

Ruby

Objective-C

Swift

In Python, null is analogous to None.

schema

{ "type": "null" }

data

null

compliant to schema

data

false

not compliant to schema

data

0

not compliant to schema

data

""

not compliant to schema

data

⠀

not compliant to schema

Need Help?

At JSON Schema, we value docs contributions as much as every other type of contribution!

Learning JSON Schema is often confusing, but don't worry, we are here to help!.