How do I allow users to enter numbers and commas ONLY on input box

Question

Hi all,What I am trying to do is, I have a form that I ask users to input department numbers separated by commas, but people are still entering department descriptions. I want to force them to only be able to enter numbers and commas, but no other characters. Something I could use in the Custom Keystroke Script box.Any help would be greatly appreciated.Thank you

try67 · Accepted Answer

Go to the field's Properties, Format, select Custom, and enter the following as the custom Keystroke script:event.rc = /^[\d,]*$/.test(event.change);

JR Boulay · Answer

I have a variation on the above question: how can I do the same thing but limit the input to 2 digits after the decimal comma?(In French format the decimal point is a decimal comma)try67

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