Constant values

New in draft 6

The const keyword is used to restrict a value to a single value.

For example, if you only support shipping to the United States for export reasons:

schema

{  "properties": {    "country": {      "const": "United States of America"    }  }}

data

{ "country": "United States of America" }

compliant to schema

data

{ "country": "Canada" }

not compliant to schema

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