Constant Values

So far, we have used the enum keyword to define a list of allowed values for a property. But what if you want to define a single constant value for a property?

Consider, you want to define a property companyName with a constant value MyCompany. any other value for companyName should be considered invalid.

1{
2  "name":"John Doe",
3  "age": 25,
4  "companyName": "MyCompany"
5}

const Keyword

The const keyword is used to define a single constant value for a property. The value of the const keyword can be any valid JSON value.

Example

1{
2  "const": "MyCompany"
3}

Now, try to add a new property companyName in the JSON schema in side editor such that it should have a constant value MyCompany.

Just for practice, we will also set the age to a constant value of 25.