Service Catalog accepts only alphanumeric values

[mano9335]

I need a client script that accepts alphanumeric, excluding special characters and 'na' 'n/a' 'None'. I have single line text box to that field. Please anyone help me with this.

Thanks

[bernyalvarado]

Hi Manoj,

Are you familiar with regular expressions? You can accomplish this through regular expressions.

The following should be helpful:

javascript regex to validate alphanumeric text with spaces and reject special characters - Stack Ove...

Thanks,

Berny

[mano9335]

Thanks for your response. I am new here and pretty not sure about scripting.

Thank you.

[Chuck Tomasi]

Hi Manoj,

You are welcome. If you are unfamiliar with scripting, check out developer.service-now.com. We also have courses available. In the mean time, consider parking some of these requirements that require scripting until you, or someone on your staff, can fully support them.

[Chuck Tomasi]

Hi Kumar,

Your script would look something like this (assuming your field is not called yourField, adjust as needed)

function onChange(control, oldValue, newValue, isLoading, isTemplate) {
   if (isLoading || newValue === '') {
   return;
   }
   g_form.hideFieldMsg('yourfField');

   var patt = "^[a-zA-Z0-9]*$";

   if (!patt.test(newValue))
   g_form.showFieldMsg('yourField', 'Invalid input', 'error');

   var patt2 = "^[Nn]/[Aa]$";

   if (!patt.test(newValue))
   g_form.showFieldMsg('yourField', 'Invalid input', 'error');

}