# Built in Validators

Built in validators are implemented [here](https://github.com/vue-generators/vue-form-generator/blob/master/src/utils/validators.js). Here is a list of the validators and what they do:

## number

Checks that the value is numeric - and that it's within the fields `min` & `max` range, if these are defined in the schema.

## integer

Checks that the value is a valid Javascript `Number` - and that it's an integer.

## double

Checks that the value is a valid number.

## string

Checks that the value is a string - and that its length is within the fields `min` & `max` range, if these are defined in the schema.

## array

Checks that the value is an array - and that the arrays `length` is within the fields `min` & `max` range, if these are defined in the schema.

Expects the value to be a valid Javascript array literal - something like this: `["John", "Doe", "Jane"]` or `[1, 2, 3]`.

## date

Checks that the value is a valid Javascript `Date` - and that the date is between the fields `min` and `max` dates, if these are defined in the schema.

## regexp

Checks that the value matches the regex defined in the fields `schema.pattern`. If `schema.pattern` isn't set, validation is skipped.

## email

Checks that the value is a plausible looking email address, using a regular expression.

## url

Checks that the value is a plausible looking http url, using a regular expression. Among other checks, the URL needs to start with `http://` or `https://`.

## creditCard

Checks that the value is a valid credit card number, using code from [here](https://github.com/chriso/validator.js).

## alpha

Checks that the value is a letter, using this regex: `/^[a-zA-Z]*$/`

## alphaNumeric

Checks that the value is a letter or a number, using this regex: `/^[a-zA-Z0-9]*$/`