Base Cost + Additional Cost Per Unit Beginning with 4th Unit

Community Beginner ,
May 08, 2020

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I'm struggling to work out a simple script to calculate the total cost after a specific number of units are added, but remain at base cost for the first 3 units.

 

For instance:

  • Cost of 1st Unit = $475 (Base cost.)
  • Cost of 1st Unit + 2 Additional Units (Total of 3 Units) = $475 (Same cost as base cost.)
  • Cost of 1st Unit + 3 Additional Units (Total of 4 Units) = $525
  • Cost of 1st Unit + 4 Additional Units (Total of 5 Units) = $575

etc.

 

The Excel formula that gives this result is:

 

=475+MAX(0,4-3)*50

 

Of course, that works in Excel, but not Acrobat.

 

The JavaScript code I've attempted is:

 

var ffcondo = Number(this.getField("FFCondo").value);
var pgcountcondo = Number(this.getField("PGcountCondo").value);
if (pgcountcondo == "") event.value = "";
else event.value = (ffcondo+(pgcountcondo-3)*50) <= 475 ? 475 : (ffcondo+(pgcountcondo-3)*50);

 

 

Unfortunately, the results I get with that JavaScript code are unreliable. Sometimes the result is correct; more often it's wrong. I'm very much a JavaScript novice. Attached is the file I'm working with.

After guidance from Bernd_Alheit and try67, this is the JavaScript I ended up using:

var pgcountcondo = Number(this.getField("PGcountCondo").value);
if (pgcountcondo == "") event.value = "";
else {
var v = (475+(pgcountcondo-3)*50);
event.value = Math.max(v, 475);
}

 

TOPICS
Acrobat SDK and JavaScript, PDF forms

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Base Cost + Additional Cost Per Unit Beginning with 4th Unit

Community Beginner ,
May 08, 2020

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I'm struggling to work out a simple script to calculate the total cost after a specific number of units are added, but remain at base cost for the first 3 units.

 

For instance:

  • Cost of 1st Unit = $475 (Base cost.)
  • Cost of 1st Unit + 2 Additional Units (Total of 3 Units) = $475 (Same cost as base cost.)
  • Cost of 1st Unit + 3 Additional Units (Total of 4 Units) = $525
  • Cost of 1st Unit + 4 Additional Units (Total of 5 Units) = $575

etc.

 

The Excel formula that gives this result is:

 

=475+MAX(0,4-3)*50

 

Of course, that works in Excel, but not Acrobat.

 

The JavaScript code I've attempted is:

 

var ffcondo = Number(this.getField("FFCondo").value);
var pgcountcondo = Number(this.getField("PGcountCondo").value);
if (pgcountcondo == "") event.value = "";
else event.value = (ffcondo+(pgcountcondo-3)*50) <= 475 ? 475 : (ffcondo+(pgcountcondo-3)*50);

 

 

Unfortunately, the results I get with that JavaScript code are unreliable. Sometimes the result is correct; more often it's wrong. I'm very much a JavaScript novice. Attached is the file I'm working with.

After guidance from Bernd_Alheit and try67, this is the JavaScript I ended up using:

var pgcountcondo = Number(this.getField("PGcountCondo").value);
if (pgcountcondo == "") event.value = "";
else {
var v = (475+(pgcountcondo-3)*50);
event.value = Math.max(v, 475);
}

 

TOPICS
Acrobat SDK and JavaScript, PDF forms

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May 08, 2020 0
Adobe Community Professional ,
May 09, 2020

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For the calculation of field "FFCondo" you use the value of field "FFCondo".
Why does you use this recursive calculation?

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May 09, 2020 0
Community Beginner ,
May 09, 2020

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Bernd:

I'm not entirely sure what you're asking. I normally don't write much JavaScript, and therefore I'm a novice in this area.

Perhaps linking to a Google Sheet that shows explicitly what I'm attempting to do will help:

CONDOMINIUM DEPOSIT WORKSHEET

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May 09, 2020 0
Adobe Community Professional ,
May 09, 2020

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Why does you use for the calculation of field "FFCondo" the value of field "FFCondo"?

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May 09, 2020 1
Community Beginner ,
May 09, 2020

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Bernd: Thank you for clarifying that.

Here's what I changed the JS in FFCondo to:

var ffcondo = Number(this.getField("FFCondo").value);
var pgcountcondo = Number(this.getField("PGcountCondo").value);
if (pgcountcondo == "") event.value = "";
else event.value = (475+(pgcountcondo-3)*50) <= 475 ? 475 : (475+(pgcountcondo-3)*50);

So far, it seems to calculate results correctly. I haven't tested it exhaustively yet, but it looks promising.

Thank you!

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May 09, 2020 0
Most Valuable Participant ,
May 09, 2020

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That last line is quite clanky. I would replace it with this:

 

else {

var v = (475+(pgcountcondo-3)*50);

event.value =  Math.max(v, 475);

}

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May 09, 2020 1
Community Beginner ,
May 09, 2020

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After guidance from Bernd_Alheit and try67, this is the JavaScript I ended up using:

var pgcountcondo = Number(this.getField("PGcountCondo").value);
if (pgcountcondo == "") event.value = "";
else {
var v = (475+(pgcountcondo-3)*50);
event.value = Math.max(v, 475);
}

 

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May 09, 2020 0