Been searching and cannot seem to see if this is possible or not.
I want to be able to check what is entered into a field by using a regex expression. Is this possible?
Background - I have a client who wants a CF to show a what3words (https://what3words.com) address. I want to be able to put a validation in on this field that will only allow entries that satisfy the criteria of a regex so that the value can be used in a url correctly
For the HTML5 attribute, you can use the attribute pattern. For the advanced validation, you can use the remote validation. Then add your own regex to validate the input value.