second field auto populates with 2.5% of that number in first field.

[murrjames]

I enter into one field a dollar amount. Then a second field auto populates with 2.5% of that number in first field.

[Bernd Alheit]

Have you a question?

[murrjames]

Sorry, guess it was the way I formed it.

If I type a dollar amount into field A, I want it to calculate 2.5 % of that amount and put it in field B. How is this done. I tried this, but does not work.

event.value = Number(this.getField("A").value) * (Number(this.getField("B").value)/2.5);

[Thom Parker · Accepted solution]

First, you need to understand the math.

What you want is this, correct?

B = .025 * A

So your code needs to be placed in the calculation script for field B.

event.value = this.getField("A").value * 0.025;

You can learn more about JavaScript and calculations here:Calculating field values and more

And you'll find an example PDF with calculations here (about halfway down the page):Free Sample PDF Files with scripts

[murrjames]

I understand what I want, just not sure of syntax. What you gave me is 100% perfect. Plus the link you sent, very helpful. Thank you.

Now, go buy a lotto ticket and win BIG!!!!

[Bernd Alheit]

You can use this simplified notation:

0.025 * A

[murrjames]

even better