Joi强大的 JS 数据验证库

Joi 是用于 JavaScript 的强大的模式描述语言和数据验证器，让你可以使用简单、直观且可读的语言来描述数据。

示例：

const Joi = require('joi');



const schema = Joi.object({

    username: Joi.string()

        .alphanum()

        .min(3)

        .max(30)

        .required(),



    password: Joi.string()

        .pattern(new RegExp('^[a-zA-Z0-9]{3,30}$')),



    repeat_password: Joi.ref('password'),



    access_token: [

        Joi.string(),

        Joi.number()

    ],



    birth_year: Joi.number()

        .integer()

        .min(1900)

        .max(2013),



    email: Joi.string()

        .email({ minDomainSegments: 2, tlds: { allow: ['com', 'net'] } })

})

    .with('username', 'birth_year')

    .xor('password', 'access_token')

    .with('password', 'repeat_password');





schema.validate({ username: 'abc', birth_year: 1994 });

// -> { value: { username: 'abc', birth_year: 1994 } }



schema.validate({});

// -> { value: {}, error: '"username" is required' }



// Also -



try {

    const value = await schema.validateAsync({ username: 'abc', birth_year: 1994 });

}

catch (err) { }