forrest-wilson / gstjs

A Simple Vanilla JS Plugin for GST Calculation https://forrest-wilson.github.io/gstjs/

GST JS

A Simple Vanilla JS Plugin for GST Calculation

https://forrest-wilson.github.io/gstjs/

Basic Usage

HTML

<script src="js/gst.min.js"></script>

JS

// decimalPercent should be written as a decimal
// e.g. a 25% GST rate should be defined as 0.25
// Only decimalPercent's smaller than 1 will be accepted
var gst = new GST(decimalPercent);

Methods

.getTotal(subtotal)

Returns the GST inclusive number.

gst.getTotal(subtotal)

typeof subtotal ? number : string

.getSubtotal(total)

Returns the GST exclusive number.

gst.getSubtotal(total)

typeof total ? number : string

.getGST(total, subtotal)

Returns the GST component of a transaction.

gst.getGST(total, subtotal)

typeof total && typeof subtotal ? number : string

.getPercent(total, subtotal)

Returns the GST percentage of a transaction.

gst.getPercent(total, subtotal)

typeof total && typeof subtotal ? number : string

.formatter(total, currencySign)

Returns a formatted string with the currency sign of choice. Default return value is "$0.00".

gst.formatter(total, currencySign)

typeof total ? number : string
typeof currencySign = string