JSON

Data Types

The seven JSON value types.

By EZ4Code TeamLast updated: 2026-08-01

data-typessyntax

Code

{
  "string": "hello",
  "number": 42,
  "float": 3.14,
  "boolean": true,
  "nullValue": null,
  "array": [1, 2, 3],
  "object": { "nested": "value" }
}

Explanation

JSON supports exactly seven value types: string, number, boolean, null, array, object, and the top-level document itself. Strings must use double quotes, and trailing commas are not permitted. Numbers cannot be NaN or Infinity, and keys must always be strings.

More JSON Snippets

Nested Objects

Objects within objects for hierarchical data.

Arrays

Lists of mixed and homogeneous values.

Schema Validation

Validate structure with JSON Schema.

JSONPath

Query expressions for locating nodes.

Merge Patch (RFC 7386)

Partially update JSON documents.

JSON Pointer (RFC 6901)

Address a specific value by path.