Using Regular Expression in Catalog Client Script to Limit Entry to 3 Digit All Numeric Entry

jmiskey · ‎07-24-2018

I am trying to verify that a Service Catalog field entry is restricted to exactly a three digit value (i.e. 051, 789, etc). So I am trying to write a Catalog Client Script using Regular Expressions, but it is not working. I keep getting an error message that says "There is a JavaScript error in your browser console" in the Service Portal when I enter an invalid entry in that field, like "AAAAA".

I tried two different methods, but neither one worked. Here is the first:

Here is my second attempt, which is very similar to one we wrote for a Variable Set some time ago, but this one isn't working either.

Can anyone see what my issue is?

Thanks

jmiskey · ‎07-24-2018

Thanks for the attempts. Playing around, we finally figured out something that works. We used this code to restrict it to numbers only:

function onChange(control, oldValue, newValue, isLoading) {
	if (isLoading || newValue == '') {
		return;
	}
	var number = g_form.getValue('pbp_id');

	if(!number.match(/^\d{3}/)){  
		alert('Please enter only a 3 digit number');
		g_form.setValue('pbp_id','');  
	}

}

And then we used the following Variable Attributes to restrict the length,

max_length=3,min_length=3

View solution in original post

Akash69 · ‎08-04-2021

This proved to be extremely helpful. Thank you.

lmseco · ‎12-05-2019

jmiskey,

Depending on the version of ServiceNow, you can also define a regex variable instead of using onchange scripts...

Define a regular expression for a variable