valid8

valid8 is a Javascript data validator for use with user input from web forms, APIs, etc.

Requirements

• Node.js
• mocha (To run tests)

Installation

npm install valid8

Run Tests

mocha

Usage

var Valid8 = require('valid8');
 
var valid8 = new Valid8('form', {
  name: 'string',
  username: {
    type: 'string',
    max: 20,
    required: true
  },
  email: 'emailString',
  age: {
    type: 'int',
    min: 18,
    required: true
  },
  gpa: {
    type: 'decimal',
  },
  gender: {
    type: 'enum',
    options: ['male', 'female']
  }
});
 
var result = valid8.areFieldsValid({
  name: 'Aiham',
  username: 'averylonglonglongusername',
  email: 'invalid email',
  age: 17,
  gpa: '1.23',
  gender: 'foobar'
});
 
/* result contains:
 
  {
    username: 'long',
    email: 'format',
    age: 'small',
    gender: 'option'
  }
 
*/

Constructor

• new Valid8([testType], [fields])
  • testType - either strict or form (see below)
  • fields - An object containing the field definitions

Instance Methods

• isFieldValid(name, value)

  • name - Name of the field to be validated
  • value - Value to be validated
  • Returns true if the field is valid
  • Returns an error response if invalid (see below)

• areFieldsValid(values, [fieldWhiteList])

  • values - An object containing the values for each field to be validated
  • fieldWhiteList - An array of field names to be validated. For when you only want to validate a subset of the fields
  • Returns true if all values are valid
  • Returns an object containing the name of each invalid field and the corresponding error response (see below)

Constants

Test Types

• Valid8.testTypes.strict - Checks value and data type. (Default)
• Valid8.testTypes.form - Checks value even if data is provided in strings. Good for web forms

Field Types

• Valid8.fieldTypes.string
• Valid8.fieldTypes.emailString
• Valid8.fieldTypes.dateString
• Valid8.fieldTypes.int
• Valid8.fieldTypes.decimal
• Valid8.fieldTypes.enum

Error Responses

• Valid8.errors.missing
• Valid8.errors.long
• Valid8.errors.short
• Valid8.errors.large
• Valid8.errors.small
• Valid8.errors.format
• Valid8.errors.dataType
• Valid8.errors.option