The fastest JSON validator for Node.js and browser.
-Supports JSON Schema draft-06/07/2019-09/2020-12 (draft-04 is supported in [version 6](https://github.com/ajv-validator/ajv/tree/v6)) and JSON Type Definition [RFC8927](https://datatracker.ietf.org/doc/rfc8927/).
+Supports JSON Schema draft-04/06/07/2019-09/2020-12 ([draft-04 support](https://ajv.js.org/json-schema.html#draft-04) requires ajv-draft-04 package) and JSON Type Definition [RFC8927](https://datatracker.ietf.org/doc/rfc8927/).
[![build](https://github.com/ajv-validator/ajv/workflows/build/badge.svg)](https://github.com/ajv-validator/ajv/actions?query=workflow%3Abuild)
[![npm](https://img.shields.io/npm/v/ajv.svg)](https://www.npmjs.com/package/ajv)
[![Gitter](https://img.shields.io/gitter/room/ajv-validator/ajv.svg)](https://gitter.im/ajv-validator/ajv)
[![GitHub Sponsors](https://img.shields.io/badge/$-sponsors-brightgreen)](https://github.com/sponsors/epoberezkin)
-## Platinum sponsors
+## Ajv sponsors
-[<img src="https://ajv.js.org/img/mozilla.svg" width="45%">](https://www.mozilla.org)<img src="https://ajv.js.org/img/gap.svg" width="8%">[<img src="https://ajv.js.org/img/reserved.svg" width="45%">](https://opencollective.com/ajv)
+[<img src="https://ajv.js.org/img/mozilla.svg" width="45%" alt="Mozilla">](https://www.mozilla.org)<img src="https://ajv.js.org/img/gap.svg" width="9%">[<img src="https://ajv.js.org/img/reserved.svg" width="45%">](https://opencollective.com/ajv)
+
+[<img src="https://ajv.js.org/img/microsoft.png" width="31%" alt="Microsoft">](https://opensource.microsoft.com)<img src="https://ajv.js.org/img/gap.svg" width="3%">[<img src="https://ajv.js.org/img/reserved.svg" width="31%">](https://opencollective.com/ajv)<img src="https://ajv.js.org/img/gap.svg" width="3%">[<img src="https://ajv.js.org/img/reserved.svg" width="31%">](https://opencollective.com/ajv)
+
+[<img src="https://ajv.js.org/img/retool.svg" width="22.5%" alt="Retool">](https://retool.com/?utm_source=sponsor&utm_campaign=ajv)<img src="https://ajv.js.org/img/gap.svg" width="3%">[<img src="https://ajv.js.org/img/tidelift.svg" width="22.5%" alt="Tidelift">](https://tidelift.com/subscription/pkg/npm-ajv?utm_source=npm-ajv&utm_medium=referral&utm_campaign=enterprise)<img src="https://ajv.js.org/img/gap.svg" width="3%">[<img src="https://ajv.js.org/img/reserved.svg" width="22.5%">](https://opencollective.com/ajv)<img src="https://ajv.js.org/img/gap.svg" width="3%">[<img src="https://ajv.js.org/img/reserved.svg" width="22.5%">](https://opencollective.com/ajv)
## Contributing
<a href="https://opencollective.com/ajv/organization/7/website"><img src="https://opencollective.com/ajv/organization/7/avatar.svg"></a>
<a href="https://opencollective.com/ajv/organization/8/website"><img src="https://opencollective.com/ajv/organization/8/avatar.svg"></a>
<a href="https://opencollective.com/ajv/organization/9/website"><img src="https://opencollective.com/ajv/organization/9/avatar.svg"></a>
+<a href="https://opencollective.com/ajv/organization/10/website"><img src="https://opencollective.com/ajv/organization/10/avatar.svg"></a>
+<a href="https://opencollective.com/ajv/organization/11/website"><img src="https://opencollective.com/ajv/organization/11/avatar.svg"></a>
## Performance
- Ajv implements JSON Schema [draft-06/07/2019-09/2020-12](http://json-schema.org/) standards (draft-04 is supported in v6):
- all validation keywords (see [JSON Schema validation keywords](https://ajv.js.org/json-schema.html))
- [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.3.md) extensions:
- - NEW: keyword [discriminator](https://ajv.js.org/json-schema.md#discriminator).
- - keyword [nullable](https://ajv.js.org/json-schema.md#nullable).
+ - NEW: keyword [discriminator](https://ajv.js.org/json-schema.html#discriminator).
+ - keyword [nullable](https://ajv.js.org/json-schema.html#nullable).
- full support of remote references (remote schemas have to be added with `addSchema` or compiled to be available)
- support of recursive references between schemas
- correct string lengths for strings with unicode pairs
## Install
-To install version 7:
+To install version 8:
```
npm install ajv
additionalProperties: false,
}
+const data = {
+ foo: 1,
+ bar: "abc"
+}
+
const validate = ajv.compile(schema)
const valid = validate(data)
if (!valid) console.log(validate.errors)
See [https://github.com/ajv-validator/ajv/releases](https://github.com/ajv-validator/ajv/releases)
-**Please note**: [Changes in version 7.0.0](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0)
+**Please note**: [Changes in version 8.0.0](https://github.com/ajv-validator/ajv/releases/tag/v8.0.0)
+
+[Version 7.0.0](https://github.com/ajv-validator/ajv/releases/tag/v7.0.0)
[Version 6.0.0](https://github.com/ajv-validator/ajv/releases/tag/v6.0.0).