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antonykidless on 04/03/20

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Last Edited at 04/03/20 09:55pm

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Vatulator - online VAT calculator

/ Published in: JavaScript

VAT rate:

Net price:

Gross price:

Tax amount:

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function net_change() {
var vat_rate = document.getElementById('vat_rate');
var net_price = document.getElementById('net_price');
var gross_price = document.getElementById('gross_price');
var tax_amount = document.getElementById('tax_amount');
gross_price.value = net_price.value *(1+(vat_rate.value/100));
tax_amount.value = gross_price.value - net_price.value;
}

function gross_change() {
var vat_rate = document.getElementById('vat_rate');
var net_price = document.getElementById('net_price');
var gross_price = document.getElementById('gross_price');
var tax_amount = document.getElementById('tax_amount');
net_price.value = gross_price.value - (gross_price.value * (vat_rate.value/100));
tax_amount.value = gross_price.value - net_price.value;
}

function amount_change() {
var vat_rate = document.getElementById('vat_rate');
var net_price = document.getElementById('net_price');
var gross_price = document.getElementById('gross_price');
var tax_amount = document.getElementById('tax_amount');
net_price.value = ((tax_amount.value / vat_rate.value)*100);
gross_price.value = Number(net_price.value) + Number(tax_amount.value);;
}

function vat_change() {
var vat_rate = document.getElementById('vat_rate');
var net_price = document.getElementById('net_price');
var gross_price = document.getElementById('gross_price');
var tax_amount = document.getElementById('tax_amount');
net_price.value = gross_price.value - (gross_price.value * (vat_rate.value/100));
gross_price.value = net_price.value *(1+(vat_rate.value/100));

}

// Добавляет слушателя событий для таблицы
var vat_rate = document.getElementById('vat_rate');
var net_price = document.getElementById('net_price');
var gross_price = document.getElementById('gross_price');
var tax_amount = document.getElementById('tax_amount');

vat_rate.addEventListener("input", vat_change, false);
net_price.addEventListener("input", net_change, false);
gross_price.addEventListener("input", gross_change, false);
tax_amount.addEventListener("input", amount_change, false);

URL: https://vatulator.co.uk/

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