limit character on custom field without any plugins

[Mahdi Challouf]

I have a text custom field and would like to limit it to 15 characters. Is there a way to do this without any plugins, so whenever this field is present on any screen it only allows 15 characters.

[Nic Brough -Adaptavist- · Accepted solution]

You can try injecting javascript, but it's rare you will reliably catch all the places you might be able to edit.

I would strongly recommend getting an App for this sort of thing.  Ideally one that provides a field that can be limited internally, not with js.

[Mahdi Challouf]

I'm bind to do it in a native way, is it possible to inject a JS ?? then how can i do it 

Thank you

[Bill Tanner]

We have done it with Power Custom Fields Premium, creating a Regular Expression field.  You can also do a post function using a validator based on Regular Expression, but that requires JSU plugin.  Sorry, not the answer you wanted.

[Mahdi Challouf]

I want to do it in a native way, without using any plugins

[Nic Brough -Adaptavist-]

There is no "native" way.  You need javascript hacks (not recommended and definitely not native) or Apps.