function stockChangeHandler(e)
function attachDeleteButtons() document.querySelectorAll('.delRowBtn').forEach(btn => btn.removeEventListener('click', deleteHandler); btn.addEventListener('click', deleteHandler); ); petrol pump accounting in excel sheet download
function attachAddRowButtons() const addSalesBtn = document.getElementById('addSalesRowBtn'); if (addSalesBtn) addSalesBtn.replaceWith(addSalesBtn.cloneNode(true)); document.getElementById('addSalesRowBtn')?.addEventListener('click', () => salesData.push( product: "New Fuel", liters: 0, rate: 100, amount: 0 ); renderTables(); ); const addExpenseBtn = document.getElementById('addExpenseRowBtn'); if (addExpenseBtn) addExpenseBtn.replaceWith(addExpenseBtn.cloneNode(true)); document.getElementById('addExpenseRowBtn')?.addEventListener('click', () => expensesData.push( date: "New Date", category: "Other", amount: 0 ); renderTables(); ); const addStockBtn = document.getElementById('addStockRowBtn'); if (addStockBtn) addStockBtn.replaceWith(addStockBtn.cloneNode(true)); document.getElementById('addStockRowBtn')?.addEventListener('click', () => stockData.push( product: "New Product", opening: 0, received: 0, sold: 0, closing: 0, unitPrice: 100 ); recomputeStock(); renderTables(); ); salesData.push( product: "New Fuel"
// Get total sales sum function getTotalSales() return salesData.reduce((sum, item) => sum + item.amount, 0); amount: 0 )
let expensesData = [ date: "01-Apr-2026", category: "Electricity", amount: 5500 , date: "05-Apr-2026", category: "Staff Salary", amount: 28500 , date: "10-Apr-2026", category: "Maintenance", amount: 3200 , date: "15-Apr-2026", category: "Misc", amount: 1750 ];