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marie@fogmaker
marie@fogmaker
Participating Frequently
May 11, 2017
Answered

Need Javascript function help - division by zero.

  • May 11, 2017
  • 2 replies
  • 1822 views

Hello,

I am new to Acrobat Javascript and I would like to get some help on this:

I have a pdf form where I have a Volume "VF" [liter] in one field and a Flow "Q" [liter/minute] in another field. In the third field I would like the calculation of Emptying time in seconds: (VF/Q)*60

Now, I manage to get the formula right, but as you start to fill in the other fields, the Q field is equal to zero so you get a message that the stated value do not match the field format. I understand this has something to do with the denominator is 0. I googled and tried the Javascript below but it doesnt work. What is wrong?

(all fields have the same format.)

// Custom calculation script(function () { // Get field values as numbersvar v1 = +getField("VF").value;var v2 = +getField("Q").value; // Perform calculation if denominator is not zero (or blank)if (v2 !== 0) {event.value = ( v1 / v2 ) * 60;} else {event.value = "";} })();

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Correct answer Test Screen Name

Try != not !== .  I didn't know !== even existed until just now And it doesn't seem quite right though it looks good in theory. If still no good, any message in console?

2 replies

T
Test Screen NameCorrect answer
Legend
May 11, 2017

Try != not !== .  I didn't know !== even existed until just now And it doesn't seem quite right though it looks good in theory. If still no good, any message in console?

    marie@fogmaker
    marie@fogmakerAuthor
    Participating Frequently
    May 11, 2017

    Thanks it works now!

    Bernd Alheit
    Community Expert
    Bernd AlheitCommunity Expert
    Community Expert
    May 11, 2017

    Don't put the code in one line.

    // Custom calculation script

    (function () {

    // Get field values as numbers

    var v1 = +getField("VF").value;

    var v2 = +getField("Q").value;

    // Perform calculation if denominator is not zero (or blank)

    if (v2 != 0) {event.value = ( v1 / v2 ) * 60;} else {event.value = "";}

    })();

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