set field max length , but in form layout , it still can input a number of data

[zhihong]

hi experts,

I set "Date" max length is 4, but in form layout it can input 15 ,why?

[Harsh Vardhan]

you can refer the below doc link to get more details about glide form method

https://docs.servicenow.com/bundle/kingston-application-development/page/app-store/dev_portal/API_re...

[Anurag Tripathi]

What will you get by making the field read only, that's not something you want to do.

[Mark Roethof · Accepted solution]

That's not possible. You can't restrict the user to add only 4 numbers. You could use the workaround Anurag and I mentioned, giving an error, maybe even do g_form.clearValue('u_date') to empty the field.

If really restricting the input, you can look at DOM manipulation. Though that's BAD PRACTICE. So not adviced.

If my answer helped you in any way, please then mark it as helpful.

Kind regards,
Mark

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[zhihong]

I will have a try

[Anurag Tripathi]

Clear the value of the field if the user has entered more than 4 characters, and throw the message why it was cleared.