How to verify proper tax id or ssn?

[Terry Wysocki]

I have a "TaxID" field on a form and I currently validate it with this script:

if (event.value) {
    if (/^\d{9}$/.test(event.value)==false) {
        app.alert("Invalid Tax ID!");
        event.rc = false;
    }
}

Which just checks to see if there are 9 digits entered.

I also want to allow entry with hyphens for either a TaxID (95-1234567) or SSN (123-45-6789) with the hyphens in either of the right places. How do I need to modify this script? (I really don't understand Regular Expressions).

[Mike Bro · Accepted solution]

Hello @Terry Wysocki,

Give this a try...

if (event.value) {
    if (/^\d{9}$/.test(event.value)==false && (/^\d{2}\-\d{7}$/.test(event.value)==false && (/^\d{3}\-\d{2}\-\d{4}$/.test(event.value)==false))) {
        app.alert("Invalid Tax ID!");
        event.rc = false;
    }
}

Regards,

Mike

[Terry Wysocki]

Perfect, Mike! Works like a charm (But I still have to study RegEx!)