script.js

async function convertCurrency() {
    const amount = document.getElementById('amount').value;
    const fromCurrency = document.getElementById('from-currency').value;
    const toCurrency = document.getElementById('to-currency').value;
    const result = document.getElementById('result');
    const convertBtn = document.getElementById('convert-btn');

    if (amount && fromCurrency && toCurrency) {
        try {
            const response = await fetch(`https://api.exchangerate-api.com/v4/latest/${fromCurrency}`);
            const data = await response.json();
            const rate = data.rates[toCurrency];
            const convertedAmount = (amount * rate).toFixed(2);

            // Display conversion result
            result.innerHTML = `${amount} ${fromCurrency} = ${convertedAmount} ${toCurrency}`;

            // Hide convert button after conversion
            convertBtn.style.display = 'none';
        } catch (error) {
            result.innerText = "Error fetching exchange rates!";
        }
    }
}

function swapCurrencies() {
    const fromCurrency = document.getElementById('from-currency');
    const toCurrency = document.getElementById('to-currency');

    // Swap currency values
    const temp = fromCurrency.value;
    fromCurrency.value = toCurrency.value;
    toCurrency.value = temp;

    // Automatically convert after swap
    convertCurrency();
}

// Event listeners for input and currency change
document.getElementById('amount').addEventListener('input', convertCurrency);

document.getElementById('from-currency').addEventListener('change', () => {
    document.getElementById('convert-btn').style.display = 'block';
    document.getElementById('result').innerHTML = '';
});

document.getElementById('to-currency').addEventListener('change', () => {
    document.getElementById('convert-btn').style.display = 'block';
    document.getElementById('result').innerHTML = '';
});