check-validator

Check validation for node.js

Check validator that enables validation on multiple parameters at once.

Instalation and usage

Instalation

npm i check-validator

Basic usage

let CheckValidator = require('check-validator');
let validator =  new CheckValidator();

//examples: hasMinLen, hasMaxLen, isEmail
validator.hasMinLen('Hulk', 5, 'Value cannot be less than 5 characters');
validator.hasMaxLen('Avengers infinity war', 6, 'Value can not be longer than 6 characters');
validator.isEmail('thanos.com', 'Invalid email');

if (!validator.isValid()) {
    console.log('Validation errors');
} else {
    console.log('There were no validation errors');
}

//erros
console.log(validator.errors());

Simple validation

Validation without chaining.

Validations

List of available validations.

String

• hasMinLen(value, text) (value, min, message) - Check if value is less than the parameter min informed
• hasMaxLen(value, max, message) - Check if value is bigger than the parameter max informed
• isFixedLen(value, len, message) - Check if value is different than the parameter len informed
• isRequired(value, message) - Check if value is required
• isString(value, message) - Determines if a reference is a String.

Email

• isEmail(value, message) - Check valid email

Number

• isNumber(value, message) - Determines if a reference is a Number.
• isGreaterThan(value, comparer, message) - Is greater than.
• isGreaterOrEqualsThan(value, comparer, message) - Is greater or equals than.
• isLowerThan(value, comparer, message) - Is lower than.
• isLowerOrEqualsThan(value, comparer, message) - Is lower or equals than.
• areEquals(value, comparer, message) - Are equals.
• areNotEquals(value, comparer, message) - Are not equals.
• isBetween(value, from, to, message) - Is between.

Other

• isUndefined(value, message) - Determines if a reference is undefined.
• isDate(value, message) - Determines if a value is a date.
• isArray(value, message) - Determines if a reference is an Array. Alias of Array.isArray.

Props and Methods

Method/Prop	Desc	Test	Status	async
errors	Return a list of errors	OK	Ready	NO
clear ()	Clear the error list	OK	Ready	NO
isValid ()	verify the validity	OK	Ready	NO
isRequired (val, message)		OK	Ready	NO
isString (val, message)		OK	Ready	NO
hasMinLen (val, min, message)		OK	Ready	NO
hasMaxLen (val, max, message)		OK	Ready	NO
isFixedLen (val, len, message)		OK	Ready	NO
isEmail (email, message)		OK	Ready	NO
isUndefined (value, message		OK	Ready	NO
isDate (value, message)		OK	Ready	NO
isArray (value, message)		OK	Ready	NO
isNumber (value, message)		OK	Ready	NO
isGreaterThan (value, comparer, message)		OK	Ready	NO
isGreaterOrEqualsThan (value, comparer, message)		OK	Ready	NO
isLowerThan (value, comparer, message)		OK	Ready	NO
isLowerOrEqualsThan (value, comparer, message)		OK	Ready	NO
areEquals (value, comparer, message)		OK	Ready	NO
areNotEquals (value, comparer, message)		OK	Ready	NO
isBetween (value, from, to, message)		OK	Ready	NO