19json-validator 中文文档教程
19json-validator
简单的 JSON 模式验证器。
Install
$ npm install 19json-validator
Usage
// import
const Validator = require('19json-validator');
// input
const input = {
id: 1,
name: 'tom',
email: 'tom@example.com',
description: '1a student',
emailAgent: 'gmail',
mother: null,
father: {
name: 'father tom',
age: 48
},
skills: [
'read',
'write',
'speak'
],
orderBy: '[{"field":"id","direction":"asc"}]'
};
// schema
const schema = {
// id field
id: {
// is optional
optional: true,
// allow type
type: ['number', 'string'],
// regexp
regex: /^[1-9][0-9]*$/
},
// name field
name: {
// optional when id present
optional: input.hasOwnProperty('id'),
// type
type: 'string',
// not allow empty
empty: false
},
// email field
email: {
// optional when id present
optional: input.hasOwnProperty('id'),
// is email
isEmail: true
},
// description field
description: {
// optional when id present
optional: input.hasOwnProperty('id'),
// type
type: 'string',
// allow empty
empty: true
},
emailAgent:{
inValues: [
'gmail',
'ymail',
'hotmail'
]
},
// mother field
mother: {
// optional
optional: true,
// nullable
nullable: true,
// is json
isJson: true,
// child schema
childSchema: {
// child name field
name: {
type: 'string'
},
// child age field
age: {
// type
type: ['number', 'string'],
// regex
regex: /^[1-9][0-9]*$/
}
}
},
// father field
father: {
// optional
optional: true,
// nullable
nullable: true,
// is json
isJson: true,
// child schema
childSchema: {
// child name field
name: {
type: 'string'
},
// child age field
age: {
// type
type: ['number', 'string'],
// regex
regex: /^[1-9][0-9]*$/
}
}
},
// skills field
skills: {
// optional
optional: true,
// is array
isArray: true,
// check for each children element
childrenSchema: {
// check directly input value
direct: true,
// type
type: 'string'
}
},
// orderBy field
orderBy: {
// optional
optional: true,
// is array
isArray: true,
// check for each children element
childrenSchema: {
// elements field
field: {
type: 'string'
},
// elements direction
direction: {
// type
type: 'string',
// regexp
regex: /^(a|de)sc$/
}
}
}
};
try {
// do validation
Validator.validate(input, schema);
} catch(err) {
// log error
console.error(err);
}
Test
$ npm test
Usage
validate(input, schema, options)
Schema config
以下配置选项可以帮助您构建自己的 json 检查模式以进行验证。
optional (boolean, default: false)
true = 允许目标键丢失,false = 必须包含键。
nullable (boolean)
true = 允许目标值为(null)对象或“null”字符串,false = 目标值不得等于(null)对象或“null”字符串。
type (string | array<string>)
限制键的目标值应该等于给定的类型,使用底层 typeof
来执行类型检查。
regex (object instanceof RegExp)
限制键的目标值应匹配给定的正则表达式,此检查将在非字符串值的值末尾添加一个空字符串。
empty (boolean, default: true)
true = 接受空值,false = 拒绝空值。
isArray (boolean, default: false)
true = 值必须是有效的数组对象或有效的 json 数组字符串。
isJson (boolean, default: false)
true = 值必须是有效对象或有效的 json 对象字符串。
isEmail (boolean, default: false)
true = 输入值必须采用有效的电子邮件格式。
childSchema (object)
使用提供的子模式检查输入值,用于嵌套的 json 对象结构。
childrenSchema (object)
使用提供的子模式检查输入(数组)值,用于 json 数组检查。
direct (boolean, default: false)
true = 使用模式直接检查输入值,用于非对象输入检查。
options
allowExtraProperties (boolean, default: true)
true = 允许模式中未定义的属性,false = 不允许模式中未定义的属性
19json-validator
Simple JSON schema validator.
Install
$ npm install 19json-validator
Usage
// import
const Validator = require('19json-validator');
// input
const input = {
id: 1,
name: 'tom',
email: 'tom@example.com',
description: '1a student',
emailAgent: 'gmail',
mother: null,
father: {
name: 'father tom',
age: 48
},
skills: [
'read',
'write',
'speak'
],
orderBy: '[{"field":"id","direction":"asc"}]'
};
// schema
const schema = {
// id field
id: {
// is optional
optional: true,
// allow type
type: ['number', 'string'],
// regexp
regex: /^[1-9][0-9]*$/
},
// name field
name: {
// optional when id present
optional: input.hasOwnProperty('id'),
// type
type: 'string',
// not allow empty
empty: false
},
// email field
email: {
// optional when id present
optional: input.hasOwnProperty('id'),
// is email
isEmail: true
},
// description field
description: {
// optional when id present
optional: input.hasOwnProperty('id'),
// type
type: 'string',
// allow empty
empty: true
},
emailAgent:{
inValues: [
'gmail',
'ymail',
'hotmail'
]
},
// mother field
mother: {
// optional
optional: true,
// nullable
nullable: true,
// is json
isJson: true,
// child schema
childSchema: {
// child name field
name: {
type: 'string'
},
// child age field
age: {
// type
type: ['number', 'string'],
// regex
regex: /^[1-9][0-9]*$/
}
}
},
// father field
father: {
// optional
optional: true,
// nullable
nullable: true,
// is json
isJson: true,
// child schema
childSchema: {
// child name field
name: {
type: 'string'
},
// child age field
age: {
// type
type: ['number', 'string'],
// regex
regex: /^[1-9][0-9]*$/
}
}
},
// skills field
skills: {
// optional
optional: true,
// is array
isArray: true,
// check for each children element
childrenSchema: {
// check directly input value
direct: true,
// type
type: 'string'
}
},
// orderBy field
orderBy: {
// optional
optional: true,
// is array
isArray: true,
// check for each children element
childrenSchema: {
// elements field
field: {
type: 'string'
},
// elements direction
direction: {
// type
type: 'string',
// regexp
regex: /^(a|de)sc$/
}
}
}
};
try {
// do validation
Validator.validate(input, schema);
} catch(err) {
// log error
console.error(err);
}
Test
$ npm test
Usage
validate(input, schema, options)
Schema config
The following config options can help you to build your own json check schema for validation.
optional (boolean, default: false)
true = allow target key missing, false = must contain key.
nullable (boolean)
true = allow target value is (null) object or 'null' string, false = target value must not equal to (null) object or 'null' string.
type (string | array<string>)
restrict target value of key should equal to given types, use underlying typeof
to perform type checking.
regex (object instanceof RegExp)
restrict target value of key should match to given regular expression, this checking will add a empty string to the end of the value for non-string value.
empty (boolean, default: true)
true = accept empty value, false = reject empty value.
isArray (boolean, default: false)
true = value must be a valid array object or a valid json array string.
isJson (boolean, default: false)
true = value must be a valid object or a valid json object string.
isEmail (boolean, default: false)
true = input value must be in valid email format.
childSchema (object)
check input value with provided child schema, use for nested json object structure.
childrenSchema (object)
check input (array) values with provided child schema, use for json array checking.
direct (boolean, default: false)
true = use schema to check the input value directly, use for non-object input checking.
options
allowExtraProperties (boolean, default: true)
true = allow properties that not defined in schema, false = do not allow properties that not defined in schema