JSON Schema Validation: A Practical Developer Guide
A practical guide to JSON Schema validation: defining types, required fields, patterns, and $ref. Covers ajv, jsonschema, and online validators.
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Tags: json, developer-tools, validation
JSON Schema Validation: A Practical Developer Guide JSON Schema solves the problem that doesn't: ensuring a document has the right structure, not just valid syntax. A string like parses fine in every JSON parser on the planet. JSON Schema is how you enforce that must be a string, not a number. This guide covers the core JSON Schema vocabulary, how to use it with in Node.js, and how to compose schemas for real-world data structures. Core Schema Keywords The most fundamental keyword. Valid values: , , , , , , . is more restrictive than — it rejects while accepts it. You can also pass an array to to allow multiple types: allows a field to be a string or null. Specifies which properties must be present. It's an array of property names on the parent object, not on the individual property…
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