How to add units to a field in a form

Use this code in the custom format event.

This is the correct way to do it.

if((event.value == "") || (event.value == 0))
    event.value = "";
else
    event.value = util.printf("%,0.2f feet",event.value);

Reverse the order of those two lines...

++edited reply-- fixed a minor typo

Place this line of code as the Custom Fomat Script of that field:

if (event.value !=="") event.value = event.target.value + " feet";
else  event.target.value ="";

And move this other line to the Custom Calculation Script section  by itself :

AFNumber_Format(1, 0, 0, 0, 0, false) 

Try this code as an "onBlur" action script for the field. This script does what you want but prevents anything but a number being added.

//OnBlur action
if ((event.target.value != null && event.target.value != "") && Number(event.target.value)) {
	var num = util.printf("%,0.2f", Number(this.getField(event.target.name).value).toFixed(2));
	event.target.value = String(num) + " feet";
} else {
	event.target.value = "";
}

One thing you don't say is what do want the fields actions to be if there is already a number and you want to change the number. The best way is to empty out the field using an onFocus action script with this code then enter the new number.

//OnFocus action
event.target.value = "";

I am using event.target.value and I do understand the differences between event.value and event.target.value but I have never been able to successfully use event.value. For whatever reason, using event.target.value has always worked for me.

Perhaps someone has a better way to do what you want. I'm always open to learning better ways to solve a problem.