Objective: To calculate Sales tax on an invoice.

New Here ,
Feb 16, 2018 Feb 16, 2018

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I have a list of taxable goods each with a price:

VehiclePrice 10,000.00

Delivery     90.00

Prep    195.00

Freight    110.00

DocFees    210.00

Total_Taxable_Items 10,605.00

I need Java PDFScript for sales tax at 6%. Is the one below correct?

var v1 = Number(this.getField("TotalTaxableItems").valueAsString);

event.value = (v1*.06); 

Next... if I wanted to allow for a variable Tax Rate percentage (different state taxes) would this script be correct? 
The objective would be to type in the Tax rate and have it calculate the correct amount.


var v1 = Number(this.getField("TotalTaxableItems").valueAsString);

var v2 = Number(this.getField("Tax_Rate").valueAsString); 

event.value = (v1*v2); 

TOPICS
Acrobat SDK and JavaScript, Windows

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Adobe Community Professional ,
Feb 17, 2018 Feb 17, 2018

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Yes, that seems right.

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New Here ,
Feb 17, 2018 Feb 17, 2018

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Try67,

Thank you. New to Java and trying to find quick reference resource for simple Script items like these.

If you have a suggestion of one please pass it along.

Thanks again,

Jim

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Adobe Community Professional ,
Feb 17, 2018 Feb 17, 2018

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First thing to know is that it's JavaScript, not Java. Similar names, but quite different languages.

Here are some good resources:

http://www.adobe.com/devnet/acrobat.html

https://acrobatusers.com/tutorials/

http://www.pdfscripting.com/

And for general JS syntax (keep in mind that many of the examples are for HTML pages, though, so stick to the core functions):

JavaScript Tutorial

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LEGEND ,
Feb 17, 2018 Feb 17, 2018

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I would set the field for the sales tax rate to "Percentage". This will display the sales tax rate as a percentage but take the input of the sales tax rate and the decimal value. In this way the visual appearance displays the percentage but the actual value used is decimal tax rate. You also might want include a rounding function to truncate the actual computed tax amount to exactly 2 decimal places since the actual values used in computer calculation are binary and many decimal values become irrational when converted to binary and the result will be a very long decimal. It will be a very small difference but if the value is taken form form and combined with other sales tax amounts will result is a larger value that what it should be.

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