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 |