Auto Calculate Text Fields?

[cmhjon]

Hi all,

Suppose I have 3 text fields. I put a number into fields 1 and 2. Without clicking anything, the sum of fields 1 and 2 automatically appear in field 3.

How does one achieve this?

Thanks,
Jon

[dunbarx]

Such a fun thing.

In the card script:

Code: Select all

on textChanged
   put fld 1 + fld 2 into fld 3
end textChanged

Craig newman

[dunbarx]

Hi again.

Know that you can insert stuff like:

Code: Select all

if the short name of the target is in variableContainingTheCorrectFieldNames and\
 target is a number then...

So that only the two fields of interest with valid text place their sums into that third field. That sort of thing, so that it actually works.

Craig

[cmhjon]

Hi Craig,

Nice! And super easy!

Thank you so much,
Jon

[bogs]

I really like that second one Craig

I didn't see anyone checking if the field had a number or if it was empty though, and although you can add, subtract, and multiply with it, you really shouldn't ever divide by 0 if you can avoid it.

[Klaus]

if the short name of the target is in variableContainingTheCorrectFieldNames and target is a number then...

...and target is a number...?
Jamais, mes amis, jamais!

[dunbarx]

Monsieur Klaus

Pourquoi, mon petite chouchou?

Craig

[dunbarx]

Bogs wrote:

Code: Select all

 a number or if it was empty t

Good point. Shows how important testing is. (Pseudo)

Code: Select all

  if the short name of the target is in varEtc... and\
 (target is a number or target = "") then

Craig

[Klaus]

Monsieur Klaus

Pourquoi, mon petite chouchou?

Craig

Oh, mon dieux, c'est ma faute, très désolé!

I was not aware of the fine difference between "the target" and "target"!
Merci, mon chèr, I learned something new today!


Best

Klaus

[dunbarx]

Klaus.

You, know, I thought that was it.

After all these years, you did not know about "target"? It goes back to HC v.1.

It really is a useful gadget. How did you live without it?

Craig

[Klaus]

Hi Craig,

After all these years, you did not know about "target"? It goes back to HC v.1.

I was not "X-Talk ready" when I received my first Mac LC with HC pre-installed in 1993, so I did not really understand HC or dived deeper into it.

It really is a useful gadget. How did you live without it?

Very fine, to be honest!


Best

Klaus

[jacque]

This brings up my pet peeve about the omission of "the" before property names. It can bite you if you aren't familiar with the entire dictionary.