function calculateExchangeRate() {
var amount = parseFloat(document.getElementById("amount").value);
var exchangeRate = parseFloat(document.getElementById("exchangeRate").value);
var fromCurrency = document.getElementById("fromCurrency").value.trim().toUpperCase();
var toCurrency = document.getElementById("toCurrency").value.trim().toUpperCase();
var resultElement = document.getElementById("result");
resultElement.innerHTML = ""; // Clear previous results
if (isNaN(amount) || isNaN(exchangeRate)) {
resultElement.innerHTML = "Please enter valid numbers for amount and exchange rate.";
return;
}
if (fromCurrency === "" || toCurrency === "") {
resultElement.innerHTML = "Please enter both 'From' and 'To' currency codes.";
return;
}
var convertedAmount = amount * exchangeRate;
resultElement.innerHTML = "" + amount.toFixed(2) + " " + fromCurrency + " is equal to
" + convertedAmount.toFixed(2) + " " + toCurrency + "";
}
.calculator-container {
font-family: Arial, sans-serif;
max-width: 600px;
margin: 20px auto;
padding: 20px;
border: 1px solid #ddd;
border-radius: 8px;
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
background-color: #f9f9f9;
}
.calculator-form h2, .calculator-result h3 {
text-align: center;
color: #333;
margin-bottom: 20px;
}
.form-group {
margin-bottom: 15px;
}
.form-group label {
display: block;
margin-bottom: 5px;
font-weight: bold;
color: #555;
}
.form-group input[type="number"],
.form-group input[type="text"] {
width: calc(100% – 12px);
padding: 8px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
}
button {
display: block;
width: 100%;
padding: 10px 15px;
background-color: #007bff;
color: white;
border: none;
border-radius: 4px;
font-size: 16px;
cursor: pointer;
transition: background-color 0.3s ease;
}
button:hover {
background-color: #0056b3;
}
.calculator-result {
margin-top: 20px;
padding: 15px;
background-color: #e9ecef;
border-radius: 4px;
text-align: center;
}
.calculator-result p {
margin: 0;
font-size: 1.1em;
color: #333;
}
.calculator-result strong {
color: #28a745;
}