# Ajv: Another JSON Schema Validator
The fastest JSON Schema validator for node.js and browser. Supports [v5 proposals](https://github.com/json-schema/json-schema/wiki/v5-Proposals).
[![Build Status](https://travis-ci.org/epoberezkin/ajv.svg?branch=master)](https://travis-ci.org/epoberezkin/ajv)
[![npm version](https://badge.fury.io/js/ajv.svg)](https://www.npmjs.com/package/ajv)
[![npm downloads](https://img.shields.io/npm/dm/ajv.svg)](https://www.npmjs.com/package/ajv)
[![Code Climate](https://codeclimate.com/github/epoberezkin/ajv/badges/gpa.svg)](https://codeclimate.com/github/epoberezkin/ajv)
[![Coverage Status](https://coveralls.io/repos/epoberezkin/ajv/badge.svg?branch=master&service=github)](https://coveralls.io/github/epoberezkin/ajv?branch=master)
[![Gitter](https://img.shields.io/gitter/room/ajv-validator/ajv.svg)](https://gitter.im/ajv-validator/ajv)
__Please note__: You can start using NEW beta version [5.0.3](https://github.com/epoberezkin/ajv/releases/tag/5.0.3-beta.0) (see [migration guide from 4.x.x](https://github.com/epoberezkin/ajv/releases/tag/5.0.1-beta.0)) with the support of JSON-Schema draft-06 (not officially published yet): `npm install ajv@^5.0.3-beta`.
Also see [docs](https://github.com/epoberezkin/ajv/tree/5.0.3-beta.0) for 5.0.3.
## Contents
- [Performance](#performance)
- [Features](#features)
- [Getting started](#getting-started)
- [Frequently Asked Questions](https://github.com/epoberezkin/ajv/blob/master/FAQ.md)
- [Using in browser](#using-in-browser)
- [Command line interface](#command-line-interface)
- Validation
- [Keywords](#validation-keywords)
- [Formats](#formats)
- [$data reference](#data-reference)
- NEW: [$merge and $patch keywords](#merge-and-patch-keywords)
- [Defining custom keywords](#defining-custom-keywords)
- [Asynchronous schema compilation](#asynchronous-compilation)
- [Asynchronous validation](#asynchronous-validation)
- Modifying data during validation
- [Filtering data](#filtering-data)
- [Assigning defaults](#assigning-defaults)
- [Coercing data types](#coercing-data-types)
- API
- [Methods](#api)
- [Options](#options)
- [Validation errors](#validation-errors)
- [Related packages](#related-packages)
- [Packages using Ajv](#some-packages-using-ajv)
- [Tests, Contributing, History, License](#tests)
## Performance
Ajv generates code using [doT templates](https://github.com/olado/doT) to turn JSON schemas into super-fast validation functions that are efficient for v8 optimization.
Currently Ajv is the fastest and the most standard compliant validator according to these benchmarks:
- [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark) - 50% faster than the second place
- [jsck benchmark](https://github.com/pandastrike/jsck#benchmarks) - 20-190% faster
- [z-schema benchmark](https://rawgit.com/zaggino/z-schema/master/benchmark/results.html)
- [themis benchmark](https://cdn.rawgit.com/playlyfe/themis/master/benchmark/results.html)
Performace of different validators by [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark):
[![performance](https://chart.googleapis.com/chart?chxt=x,y&cht=bhs&chco=76A4FB&chls=2.0&chbh=32,4,1&chs=600x416&chxl=-1:%7Cajv%7Cis-my-json-valid%7Cjsen%7Cschemasaurus%7Cthemis%7Cz-schema%7Cjsck%7Cjsonschema%7Cskeemas%7Ctv4%7Cjayschema&chd=t:100,68,61,22.8,17.6,6.6,2.7,0.9,0.7,0.4,0.1)](https://github.com/ebdrup/json-schema-benchmark/blob/master/README.md#performance)
## Features
- Ajv implements full [JSON Schema draft 4](http://json-schema.org/) standard:
- all validation keywords (see [JSON-Schema validation keywords](https://github.com/epoberezkin/ajv/blob/master/KEYWORDS.md))
- full support of remote refs (remote schemas have to be added with `addSchema` or compiled to be available)
- support of circular references between schemas
- correct string lengths for strings with unicode pairs (can be turned off)
- [formats](#formats) defined by JSON Schema draft 4 standard and custom formats (can be turned off)
- [validates schemas against meta-schema](#api-validateschema)
- supports [browsers](#using-in-browser) and nodejs 0.10-6.x
- [asynchronous loading](#asynchronous-compilation) of referenced schemas during compilation
- "All errors" validation mode with [option allErrors](#options)
- [error messages with parameters](#validation-errors) describing error reasons to allow creating custom error messages
- i18n error messages support with [ajv-i18n](https://github.com/epoberezkin/ajv-i18n) package
- [filtering data](#filtering-data) from additional properties
- [assigning defaults](#assigning-defaults) to missing properties and items
- [coercing data](#coercing-data-types) to the types specified in `type` keywords
- [custom keywords](#defining-custom-keywords)
- keywords `switch`, `constant`, `contains`, `patternGroups`, `patternRequired`, `formatMaximum` / `formatMinimum` and `formatExclusiveMaximum` / `formatExclusiveMinimum` from [JSON-schema v5 proposals](https://github.com/json-schema/json-schema/wiki/v5-Proposals) with [option v5](#options)
- [v5 meta-schema](https://raw.githubusercontent.com/epoberezkin/ajv/master/lib/refs/json-schema-v5.json#) for schemas using v5 keywords
- [v5 $data reference](#data-reference) to use values from the validated data as values for the schema keywords
- [asynchronous validation](#asynchronous-validation) of custom formats and keywords
Currently Ajv is the only validator that passes all the tests from [JSON Schema Test Suite](https://github.com/json-schema/JSON-Schema-Test-Suite) (according to [json-schema-benchmark](https://github.com/ebdrup/json-schema-benchmark), apart from the test that requires that `1.0` is not an integer that is impossible to satisfy in JavaScript).
## Install
```
npm install ajv
```
To install a stable beta version [5.0.3](https://github.com/epoberezkin/ajv/releases/tag/5.0.3-beta.0) (see [migration guide from 4.x.x](https://github.com/epoberezkin/ajv/releases/tag/5.0.1-beta.0)):
```
npm install ajv@^5.0.3-beta
```
## <a name="usage"></a>Getting started
Try it in the node REPL: https://tonicdev.com/npm/ajv
The fastest validation call:
```javascript
var Ajv = require('ajv');
var ajv = new Ajv(); // options can be passed, e.g. {allErrors: true}
var validate = ajv.compile(schema);
var valid = validate(data);
if (!valid) console.log(validate.errors);
```
or with less code
```javascript
// ...
var valid = ajv.validate(schema, data);
if (!valid) console.log(ajv.errors);
// ...
```
or
```javascript
// ...
ajv.addSchema(schema, 'mySchema');
var valid = ajv.validate('mySchema', data);
if (!valid) console.log(ajv.errorsText());
// ...
```
See [API](#api) and [Options](#options) for more details.
Ajv compiles schemas to functions and caches them in all cases (using schema stringified with [json-stable-stringify](https://github.com/substack/json-stable-stringify) as a key), so that the next time the same schema is used (not necessarily the same object instance) it won't be compiled again.
The best performance is achieved when using compiled functions returned by `compile` or `getSchema` methods (there is no additional function call).
__Please note__: every time validation function or `ajv.validate` are called `errors` property is overwritten. You need to copy `errors` array reference to another variable if you want to use it later (e.g., in the callback). See [Validation errors](#validation-errors)
## Using in browser
You can require Ajv directly from the code you browserify - in this case Ajv will be a part of your bundle.
If you need to use Ajv in several bundles you can create a separate UMD bundle using `npm run bundle` script (thanks to [siddo420](https://github.com/siddo420)).
Then you need to load Ajv in the browser:
```html
<script src="ajv.min.js"></script>
```
This bundle can be used with different module systems or creates global `Ajv` if no module system is found.
The browser bundle is available
没有合适的资源?快使用搜索试试~ 我知道了~
毕业设计科研项目过程管理系统.zip
共2000个文件
js:777个
md:722个
json:483个
1.该资源内容由用户上传,如若侵权请联系客服进行举报
2.虚拟产品一经售出概不退款(资源遇到问题,请及时私信上传者)
2.虚拟产品一经售出概不退款(资源遇到问题,请及时私信上传者)
版权申诉
0 下载量 180 浏览量
2023-10-26
20:14:07
上传
评论
收藏 18.3MB ZIP 举报
温馨提示
matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行! matlab算法,毕设、课设程序,全部源码均已进行严格测试,可以直接运行!
资源推荐
资源详情
资源评论
收起资源包目录
毕业设计科研项目过程管理系统.zip (2000个子文件)
map-file-comment-inline.css 1KB
map-file-comment.css 252B
map-file-comment-double-slash.css 249B
index.html 270B
index.html 170B
vue.common.js 236KB
vue.esm.js 236KB
vue.js 234KB
vue.runtime.common.js 170KB
vue.runtime.esm.js 170KB
vue.runtime.js 168KB
viewer.js 163KB
js-yaml.js 103KB
he.js 83KB
container.js 78KB
vue.min.js 74KB
node.js 56KB
vue-router.common.js 55KB
vue-router.esm.js 55KB
vue-router.js 55KB
vue.runtime.min.js 53KB
parser.js 52KB
test.js 46KB
loader.js 41KB
js-yaml.min.js 41KB
object.js 39KB
parser.js 38KB
lazy-result.js 35KB
stringifier.js 35KB
index.js 34KB
emit.js 34KB
regenerate.js 33KB
emit.js 32KB
tokenize.js 31KB
map-generator.js 31KB
array.js 30KB
big.js 28KB
_stream_readable.js 28KB
_stream_readable.js 26KB
_prepare.js 25KB
dumper.js 25KB
response.js 25KB
css-syntax-error.js 24KB
index.js 24KB
url.js 23KB
_common.js 22KB
object.js 22KB
index.js 22KB
processor.js 22KB
index.js 21KB
vue-router.min.js 21KB
optimize.js 21KB
patch.js 21KB
tokenize.js 20KB
prefixes.js 20KB
compactable.js 19KB
postcss.js 19KB
x509.js 18KB
Emitter.js 18KB
previous-map.js 18KB
input.js 17KB
index.js 17KB
_stream_writable.js 16KB
result.js 15KB
index.js 15KB
utila.js 15KB
cmd.js 15KB
string.js 15KB
index.js 15KB
loader.js 14KB
punycode.js 14KB
application.js 14KB
coa.js 13KB
override-properties.js 13KB
read-sources.js 13KB
at-rule.js 13KB
classic.js 12KB
prefixes.js 12KB
request.js 12KB
array.js 12KB
restructure.js 12KB
framework.js 12KB
pkcs8.js 12KB
processor.js 12KB
root.js 11KB
index.js 11KB
gradient.js 11KB
break-up.js 11KB
validator.js 11KB
_stream_writable.js 11KB
rule.js 11KB
certificate.js 10KB
validate.js 10KB
declaration.js 10KB
DirectoryWatcher.js 10KB
jsesc.js 9KB
create-component.js 9KB
warning.js 9KB
visit.js 9KB
base.js 9KB
共 2000 条
- 1
- 2
- 3
- 4
- 5
- 6
- 20
资源评论
天天501
- 粉丝: 596
- 资源: 4666
上传资源 快速赚钱
- 我的内容管理 展开
- 我的资源 快来上传第一个资源
- 我的收益 登录查看自己的收益
- 我的积分 登录查看自己的积分
- 我的C币 登录后查看C币余额
- 我的收藏
- 我的下载
- 下载帮助
安全验证
文档复制为VIP权益,开通VIP直接复制
信息提交成功