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Validation

The Validation option gives you the ability to quickly add a specific validation to any of your fields. This will decrease the risk of a user making mistakes or typos while filling out the form.
Below you can find the available validation methods:

Letters only

Only allow input field to contain letters, and nothing else
^[a-zA-Z]+$

Required Field (not empty)

This is the most used validation method, it will simply check if the field was entered or not. This allows you to make a field a so called Required field*.

E-mail address

This validation method checks if the entered email address was a possible valid
The regex used for this validation is:
^([\w-\.]+@([\w-]+\.)+[\w-]{2,63})?$

Phone number

Validations phone numbers with a minimum of 10 characters in length and only allows numbers, spaces, -, +
The regex used for this validation is:
^((\+)?[1-9]{1,2})?([-\s\.])?((\(\d{1,4}\))|\d{1,4})(([-\s\.])?[0-9]{1,12}){1,2}$

Numeric

This validation checks if the entered value contains numbers only and no other characters.
The regex used for this validation is:
^\d+$

Float

This validation method can be used whenever you require to validate the user input to be a float value. A float value never contains a comma, and only contains numbers and a dot (.).
The regex used for this validation is:
^[+-]?\d+(\.\d+)?$

Website URL

This validation method is used whenever you require the user to enter a valid URL address.
The regex used for this validation is:
^(http(s)?:\/\/)?(www\.)?[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$

IBAN

Whenever you are asking for an IBAN number you can use this validation method to make sure the entered IBAN is a valid number.

Custom Regex

If you require a specific validation this option allows you to use a custom regular expression on the value entered by the user. If no match was found based on the entered value the Error Message will be displayed to the user.
Some example regular expressions that you might like to use are:

match password that is at least 8 characters long, contains a lower case and upper case letter, contains at least one number and at least a special character/symbol.

^(?=.*[A-Z])(?=.*[0-9])(?=.*[a-z])(?=.*[$&+,:;=?@#|\/\\[\]{}'"<>.^*()%!-]).{8,}$

match username

^[a-z0-9_-]{3,16}$

match any ip address

^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$

match credit card numbers

^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35d{3})d{11})$

match email address

^[A-Z0-9._%+-]+@[A-Z0-9.-]+.[A-Z]{2,4}$

match email address except specific domains

^(?!.*@(spamgourmet|mailinator))[\w-.+]+@([\w-]+.)+[\w-]{2,63}$

select integers only

^[0-9 -()+]+$

match number in range 0-255

^([01][0-9][0-9]|2[0-4][0-9]|25[0-5])$

match number in range 0-999

^([0-9]|[1-9][0-9]|[1-9][0-9][0-9])$

match ints and floats/decimals

^[-+]?([0-9]*.[0-9]+|[0-9]+)$

Match Any number from 1 to 50 inclusive

^(^[1-9]{1}$|^[1-4]{1}[0-9]{1}$|^50$)$

match elements that could contain a phone number

^[0-9-()+]{3,20}$

MatchDate (e.g. 21/3/2006)

^(d{1,2}/d{1,2}/d{4})$

match date in format MM/DD/YYYY

^(0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])[- /.](19|20)dd$

match date in format DD/MM/YYYY

^(0[1-9]|[12][0-9]|3[01])[- /.](0[1-9]|1[012])[- /.](19|20)dd$

match a url string (Fixes spaces and querystrings)

^(http(s)?:\/\/)?(www\.)?[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$

match domain name (with HTTP)

(.*?)[^w{3}.]([a-zA-Z0-9]([a-zA-Z0-9-]{0,65}[a-zA-Z0-9])?.)+[a-zA-Z]{2,6}$

match domain name (www. only)

[^w{3}.]([a-zA-Z0-9]([a-zA-Z0-9-]{0,65}[a-zA-Z0-9])?.)+[a-zA-Z]{2,6}$

match domain name (alternative)

(.*?).(com|net|org|info|coop|int|com.au|co.uk|org.uk|ac.uk|)$

match sub domains: www, dev, int, stage, int.travel, stage.travel

(http://|https://)?(www.|dev.)?(int.|stage.)?(travel.)?(.*)+?$

Match jpg, gif or png image

([^s]+(?=.(jpg|gif|png)).2)$

match all images

<img .+?src="(.*?)".+?/>$

match just .png images

<img .+?src="(.*?.png)".+?/>$

match RGB (color) string

^rgb((d+),s*(d+),s*(d+))$

match hex (color) string

^#?([a-f0-9]{6}|[a-f0-9]{3})$

Match Valid hexadecimal colour code

(#?([A-Fa-f0-9]){3}(([A-Fa-f0-9]){3})?)$

match a HTML tag (v1)

^< ([a-z]+)([^<]+)*(?:>(.*)< /1>|s+/>)$

match HTML Tags (v2)

(< (/?[^>]+)>)$

match /product/123456789

(/product/)?+[0-9]+$

Match Letters, numbers and hyphens

([A-Za-z0-9-]+)$