Script to validate telephone number to allow only numbers and spaces

ClareM · ‎07-13-2021

I need a script to validate a telephone number field that will only allow numbers and spaces (no special characters). Min 10 & max 20 characters and to show field msg and clear value if invalid value entered.

Can anyone point me in the right direction? Thanks in advance

Ankur Bawiskar · ‎07-13-2021

Hi,

something like this

function onChange(control, oldValue, newValue, isLoading) {
	if (isLoading || newValue == '') {
		return;
	}

	g_form.hideFieldMsg('fieldName');

	var regex = /^[\d\s]{10,20}$/;

	if (newValue != '' && !regex.test(newValue)) {
		g_form.clearValue('fieldName');
		g_form.showFieldMsg("fieldName", "Invalid phone", "error");
	}
}

Regards
Ankur

Regards,
Ankur
✨ Certified Technical Architect || ✨ 9x ServiceNow MVP || ✨ ServiceNow Community Leader

View solution in original post

Silvin · ‎07-13-2021

Hi Clare,

This depends on where you are using this field. I would suggest using the OOB Phone Number(E164) field type. It will do all the validations automatically.

Please refer https://docs.servicenow.com/bundle/paris-platform-administration/page/administer/field-administratio...

Regards,

Silvin Jude Thomas

ClareM · ‎07-13-2021

Hi Silvin,

Is this field type available in Service Catalog? I saw a previous post about this field type on the community but couldn't see it available in the type list.

Thanks,

Clare

Silvin · ‎07-13-2021

Hi Claire,

Unfortunately no, its not available on Service Catalog. For this you will have to do a regex check via client script.

This would be the regex for the expression : /^[\d][\d ]{10,20}$/

var id='1234 3456 897';

var regexp = /^[\d][\d ]{10,20}$/;
var idi = id.match(regexp);

You can goto https://regex101.com/ and try some regex expressions if you ever want to upgrade to a more better regex because to be honest the current validations you a using "only allow numbers and spaces (no special characters). Min 10 & max 20 characters" is a very weak validation.

Regards,

Silvin Jude Thomas