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<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Banking-example</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="container">
<h2>Bank - Check and withdraw money</h2>
<div class="data">
<label for="amount">Please enter the withdrawal money : </label>
<div id="accbal"></div>
</div>
<form>
<input type="number" id="amount" name="amount" step="0.01">
<button type="submit">Withdraw</button>
</form>
<div id="status-msg"></div>
</div>
<script src="script.js"></script>
</body>
</html>
html---
// Class implementing the BankAccount interface
var Bank = /** @class */ (function () {
// constructor to set the initial balance
function Bank(balance) {
this.balance = balance;
var accbal = document.querySelector("#accbal");
accbal.textContent = "Balance: ".concat(this.balance.toFixed(2));
accbal.style.color = "blue";
}
// method to withdraw money from the account
Bank.prototype.withdrawMoney = function (amount) {
var minBal = 500; // Minimum balance req. in the account
// check if the amount entered is valid
if (isNaN(amount) || amount <= 0) {
var message = "Please enter a valid amount";
var statusMsg = document.querySelector("#status-msg");
var form_1 = document.querySelector("form");
// display err. msg.
if (statusMsg && form_1) {
statusMsg.textContent = message;
statusMsg.style.color = "red";
}
}
// check if withdrawal amount exceed the max withdrawal amount
else if (this.balance - amount < minBal) {
var maxWithdrawal = this.balance - minBal; // max withdrawal
var statusMsg = document.querySelector("#status-msg");
var form_2 = document.querySelector("form");
// display warning msg.
if (form_2) {
statusMsg.textContent = "Withdawal unsuccessful, Max withdral amount is ".concat(maxWithdrawal.toFixed(2));
statusMsg.style.color = "orange";
}
}
// if the withdrawal is successful
else {
this.balance -= amount; // update the balance
var statusMsg = document.querySelector("#status-msg");
var accbal = document.querySelector("#accbal");
var form_3 = document.querySelector("form");
// display success msg.
if (statusMsg && form_3) {
statusMsg.textContent = "Withdawal successful, Remaining bal is ".concat(this.balance.toFixed(2));
statusMsg.style.color = "green";
accbal.textContent = "Balance: ".concat(this.balance.toFixed(2));
accbal.style.color = "blue";
}
}
};
return Bank;
}());
// Get HTML elements
var form = document.querySelector("form");
var amountInput = document.querySelector("#amount");
// create a new bank account instance
var myBank = new Bank(10000);
// add event listener for form submission
form === null || form === void 0 ? void 0 : form.addEventListener("submit", function (e) {
e.preventDefault();
var amount = parseFloat(amountInput.value);
myBank.withdrawMoney(amount);
});
script.js---
// Interface defining te properties and methods of a bank account
interface BankAccount {
balance: number; // property for curent balance
withdrawMoney: (amount: number) => void; // Methood to withdraw money
}
// Class implementing the BankAccount interface
class Bank implements BankAccount {
balance: number; // Property for current balance
// constructor to set the initial balance
constructor(balance: number) {
this.balance = balance;
var accbal = document.querySelector("#accbal") as HTMLDivElement;
accbal.textContent = `Balance: ${this.balance.toFixed(2)}`;
accbal.style.color = "blue";
}
// method to withdraw money from the account
withdrawMoney(amount: number): void {
const minBal = 500; // Minimum balance req. in the account
// check if the amount entered is valid
if (isNaN(amount) || amount <= 0) {
const message = "Please enter a valid amount";
const statusMsg = document.querySelector("#status-msg") as HTMLDivElement;
const form = document.querySelector("form");
// display err. msg.
if (statusMsg && form) {
statusMsg.textContent = message;
statusMsg.style.color = "red";
}
}
// check if withdrawal amount exceed the max withdrawal amount
else if (this.balance - amount < minBal) {
const maxWithdrawal = this.balance - minBal; // max withdrawal
const statusMsg = document.querySelector("#status-msg") as HTMLDivElement;
const form = document.querySelector("form");
// display warning msg.
if (form) {
statusMsg.textContent = `Withdawal unsuccessful, Max withdral amount is ${maxWithdrawal.toFixed(
2
)}`;
statusMsg.style.color = "orange";
}
}
// if the withdrawal is successful
else {
this.balance -= amount; // update the balance
const statusMsg = document.querySelector("#status-msg") as HTMLDivElement;
const accbal = document.querySelector("#accbal") as HTMLDivElement;
const form = document.querySelector("form");
// display success msg.
if (statusMsg && form) {
statusMsg.textContent = `Withdawal successful, Remaining bal is ${this.balance.toFixed(
2
)}`;
statusMsg.style.color = "green";
accbal.textContent = `Balance: ${this.balance.toFixed(2)}`;
accbal.style.color = "blue";
}
}
}
}
// Get HTML elements
var form = document.querySelector("form");
var amountInput = document.querySelector("#amount") as HTMLInputElement;
// create a new bank account instance
var myBank = new Bank(10000);
// add event listener for form submission
form?.addEventListener("submit", (e) => {
e.preventDefault();
const amount = parseFloat(amountInput.value);
myBank.withdrawMoney(amount);
});
script.ts----
* {
padding: 0;
margin: 0;
box-sizing: border-box;
}
body {
display: flex;
align-items: center;
text-align: center;
justify-content: center;
}
.container {
display: flex;
align-items: center;
text-align: center;
border: 1px solid black;
flex-direction: column;
padding: 20px;
border-radius: 5px;
background-color: rgb(247, 242, 236);
}
h2 {
margin-bottom: 20px;
}
.data,
form {
margin-bottom: 15px;
}
.data {
display: flex;
flex-direction: row;
gap: 10px;
}
form {
display: flex;
flex-direction: row;
}
input {
margin-right: 5px;
}
input,
button {
padding: 10px;
margin-bottom: 5px;
border-radius: 5px;
}
button {
color: #fff;
background-color: blue;
border: 1px solid blue;
font-size: 14px;
letter-spacing: 1.25px;
}
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
-webkit-appearance: none;
margin: 0;
}
csss-----
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