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Question #1 Write a javascript for an ATM withdrawal application. The ATM machine will only accept a transaction if the withdrawal amount X is a multiple of 20, and account has enough balance to perform withdrawal transaction (including bank charges) For each successful withdrawal the bank charges 0.50$. The account will have an initial balance of 500$. A) You have to declare an input type and a button in your HTML form with input type having a placeholder Enter withdrwal amount Submit B) Javascript has 2 functions validateAmount.js and withdrwawAmount.js a. validateAmount: Make sure the amount entered is numeric, alert a message Please enter numeric value otherwise. b. withdrawAmount: Process transaction and alert one of the following three messages depending on the withdrawal amount i. Not multiple of 20: Incorrect withdrawal amount ii. Insufficient funds iii. Successful transaction! \n Current Balance is: ” + balance

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Answer #1

Here is code:

atm.html:

<!doctype html>

<html>

<head>

<script src="./validateAmount.js"></script>

<script src="./withdrwawAmount.js"></script>

<title>ATM</title>

</head>

<body>

<div style="text-align: center">

<input type="text" id="txtAmount" placeholder="Enter withdrawal amount">

<button onclick="withdrawal()">Submit</button>

</div>

</body>

</html>

validateAmount.js:

function validate(amount) {

var re = /[+-]?([0-9]*[.])?[0-9]+/;

return re.test(amount);

}

withdrwawAmount.js:

var balance = 500;

function withdrawal() {

var input = document.getElementById("txtAmount").value;

if (validate(input)) { // check if input is value

var amount = Number(input);

if (amount % 20 != 0) { // check if divisible by 20

alert("Incorrect withdrawal amount");

} else if (amount > window.balance) { // check if sufficient balance

alert("Insufficient funds");

} else {

// deduct amount

window.balance = window.balance - amount;

alert("Successful transaction!\n Current Balance is : " + window.balance)

}

} else {

alert("Please enter numeric value");

}

}

Output:

Successful transaction! Current Balance is: 400 OK

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