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Hoey
Hoey
Known Participant
December 11, 2017
Answered

Need some help using Natural Logarithm/LN Calculation

  • December 11, 2017
  • 2 replies
  • 632 views

I have a couple text boxes as follows:

text1 = number that doesn't change (6.5459673)

text2 = number that will change based on input from another text box (box1F6)

in excel the calculation would be: 6.5459673 (or text1) * (LN(F6))

I tried doing this:

var nBox = + getField("box1F6").value;

event.value = math.log(nBox);

but that didn't even put a 0 or any input for that matter. 

Any help is appreciated! Thanks in advance!

This topic has been closed for replies.
Correct answer try67

Should work, only it's Math.log(), not math.log()... JS is case-sensitive, so the latter would cause an error.

2 replies

Thom Parker
Community Expert
Thom ParkerCommunity Expert
Community Expert
December 11, 2017

Was there an error reported in the console?

Is this code entered into the Calculation Script?

Do you know that the value of "box1F6" is a number?

And math needs to be capitalized:  Math.log();

Try this. add this line to  your code immediately after the "getField" line

console.pritnln("Val=" + nBox);

Here is a tutorial on using the Console Window.

The Acrobat JavaScript Console Window - YouTube

Thom Parker - Software Developer at PDFScriptingUse the Acrobat JavaScript Reference early and often
    try67
    Community Expert
    try67Community ExpertCorrect answer
    Community Expert
    December 11, 2017

    Should work, only it's Math.log(), not math.log()... JS is case-sensitive, so the latter would cause an error.

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