Dynamically alter field length based on input from another field

[Derrick24104557gw4s]

Hi,

I am creating a form that has an input for phone numbers. I am trying to dynamically limit the field length based on the input from another field (country). If the field is domestic, I want to limit the field to 10 characters, however, if the field is selected as other, then I want to allow up to 20 characters. Is this something that I can do through custom logic?

[bebarth]

You can write this script in onBlur action:

if (this.getField("country").value=="domestic") event.target.charLimit=10;
else event.target.charLimit=20;

Or in custom keystroke script if you know the pattern of both phone numbers, and you place one or two regular expressions.

@+

[try67]

This needs to be done in a different event. Limiting the number of characters after the user exited the field is like closing the gates after the cows have fled... You need to do it before-hand, preferably in an action associated with the other field ("country"), such as the Validation event, or Mouse Up (if it's a check-box).

[bebarth · Accepted solution]

Here is an example for what can be done.

@+

[Derrick24104557gw4s]

Thanks! That's exactly what I was looking to implement. I didn't think that it should have been in the keystroke section to limit while the user is still in the field entry rather than after they've exited