Need negative number to show up as 0 on a calculated field

[Kristin22377177lnt1]

Hello. I'm really new to this and am creating a form where I need to subtract Field B from Field A and make the total appear in Field C. This part I understand. The problem I'm running into is if the total equals a negative number, I want it to show up as zero. Is that possible? I've had a few other codes I've tried to just get it to display, but as soon as I do another formula within the pages, it makes the total disappear. If someone could please help with a good calculation code, I would really appreciate it!

[Nesa Nurani · Accepted solution]

As validation script of FieldC use this:

if(event.value < 0)event.value = 0;

[Kristin22377177lnt1]

I've used that one, but how do I also make it calculate in the same field? I want Field C to do the math and also not to display anything negative.

[Kristin22377177lnt1]

Nevermind! You're a genius!! It worked! I had been trying to put that code in the custom script for calculations!! Thank you so much!!!!

[webgo.me]

Along those lines, I am running into a challenge with an enrollment form I need help with.

I have a form field (FieldB) that needs to equal the value calculated in another field (FieldA) but ONLY if it’s a negative number, and then I want to convert it to a positive number. 

However, if the value of the other field (FieldA) is positive, I want field (FieldB) to display 0.

Finally, if FieldB is populated with a positive number, then I need FieldC to input with the FieldB divided by 65. Otherwise, FieldC will remain blank.

[Nesa Nurani · Accepted solution]

You can use this as 'Validation' script of "FieldA":

var num = Number(event.value);
if(num > 0){
this.getField("FieldB").value = 0;
this.getField("FieldC").value = "";}
else if(num < 0){
this.getField("FieldB").value = Math.abs(num);
this.getField("FieldC").value = Math.abs(num)/65;}
else{
this.getField("FieldB").value = "";
this.getField("FieldC").value = "";}

[webgo.me]

WOW, WOW, WOW!!! You are a genius.Works perfectly.

Thank you so much!!