JS 05 – Best JavaScript program to calculate simple interest

Best Javascript program to calculate simple interest

It is best and simple Javascript program to calculate simple interest.

Formula to calculate simple interest is:

Simple interest = (P x N x R)/100

P : Principle amount

N : Number of years

R : Rate of interest

Output: Write a program to calculate simple interest using JavaScript

Simple Interest - ITVoyagers






Javascript program to calculate simple interest

HTML code

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<title>Simple Interest - ITVoyagers</title>
</head>
<body>
	<label>Principle</label><br>
	<input type="text" id="principle" placeholder="Principle">
	<br>
	<label>Years</label><br>
	<input type="text" id="years" placeholder="Years">
	<br>
	<label>Rate of Interest(%)</label><br>
	<input type="text" id="roi" placeholder="Rate of the interest(%)">
	<br>
<!-- itvoyagers.in -->
	<button id="calculate_button" onclick="countSI()">Calculate</button>
	<br>
	<div id="outputdiv">
		<label>Simple Interest is : <span id="outputspan"></span></label>
	</div>
	<script type="text/javascript" src="simpleinterest.js"></script>
<!-- itvoyagers.in -->
</body>
</html>

Javascript code (simpleinterest.js)

var principle = document.getElementById("principle");
var roi = document.getElementById("roi");
var years = document.getElementById("years");
var outputspan = document.getElementById("outputspan");

//itvoyagers.in
function countSI()
{
	p = parseFloat(principle.value);
	n = parseFloat(years.value);
	r = parseFloat(roi.value);
	si = (p*n*r)/100;
	outputspan.innerHTML = si;
}

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