tylen/isdieselcheaper
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

working state

Browse Source
This commit is contained in:
Vasily Davydov
2026-09-21 14:58:02 +03:00
parent 17c01cd79a
commit ec8c8f2a81
4 changed files with 33 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
fuel-calc.js
View File

@@ -5,6 +5,7 @@ function updateLanguage() {
const language = langData[currentLang];
document.getElementById("header").textContent = language.header;
document.getElementById("description").textContent = language.description;
document.getElementById("dTaxLabel").textContent = language.dTaxLabel;
document.getElementById("dPriceLabel").textContent = language.dPriceLabel;
document.getElementById("dConsLabel").textContent = language.dConsLabel;
@@ -43,34 +44,35 @@ function calculate() {
const pCons = parseFloat(document.getElementById("pCons").value);
const annualKm = parseFloat(document.getElementById("annualKm").value);
const dieselCostPerKm = (dPrice * dCons) / 100;
const petrolCostPerKm = (pPrice * pCons) / 100;
const dieselAnnualCost = (dTax + (dieselCostPerKm * annualKm));
const petrolAnnualCost = (pTax + (petrolCostPerKm * annualKm));
const diff = Math.abs(dieselAnnualCost - petrolAnnualCost);
let breakEvenCons = 0;
if (dCons < pCons || dTax > pTax) {
breakEvenCons = (pCons - ((dTax - pTax) / (annualKm * (pPrice - dPrice))));
if (breakEvenCons <= 0) breakEvenCons = 0;
}
// 1. Calculate Break-Even Petrol Consumption
// Formula: P_Cons = (100 * (dTax - pTax) / (annualKm * pPrice)) + (dCons * dPrice / pPrice)
const taxDiff = dTax - pTax;
const breakEven = (100 * taxDiff / (annualKm * pPrice)) + (dCons * dPrice / pPrice);
// 2. Generate Table
// 2. Calculate Minimum Diesel Price where user's pCons equals break-even consumption
// We want to solve for dPrice such that: pCons = (100 * taxDiff / (annualKm * pPrice)) + (dCons * dPrice / pPrice)
// Rearranging for dPrice:
// pCons - (100 * taxDiff / (annualKm * pPrice)) = (dCons * dPrice / pPrice)
// dPrice = (pCons - (100 * taxDiff / (annualKm * pPrice))) * pPrice / dCons
let minDieselPrice = 0;
if (dPrice < pPrice || dTax > pTax) {
minDieselPrice = (pPrice - ((dTax - pTax) / (annualKm * (pCons - dCons))));
if (minDieselPrice <= 0) minDieselPrice = 0;
if (dCons > 0 && annualKm > 0 && pPrice > 0) {
const firstTerm = 100 * taxDiff / (annualKm * pPrice);
const secondTerm = pCons - firstTerm;
minDieselPrice = secondTerm * pPrice / dCons;
}
document.getElementById("displayKm").textContent = annualKm.toLocaleString();
document.getElementById("breakEvenCons").textContent = breakEvenCons.toFixed(2);
document.getElementById("breakEvenCons").textContent = breakEven.toFixed(2);
document.getElementById("minDieselPrice").textContent = minDieselPrice.toFixed(2);
const tbody = document.getElementById("comparisonTable").getElementsByTagName('tbody')[0];
tbody.innerHTML = '';
for (let i = 10000; i <= 50000; i += 5000) {
for (let i = 5000; i <= 50000; i += 5000) {
const row = tbody.insertRow();
const cell1 = row.insertCell(0);
const cell2 = row.insertCell(1);