A simple program to show basic math operations like addition, subtraction, multiplication, and division of two numbers using JavaScript programming language.
I am currently accepting programming work, IT projects, school and application development, programming projects, thesis and capstone projects, IT consulting work, computer tutorials, and web development work kindly contact me in the following email address for further details. If you want to advertise on my website kindly contact me also in my email address also. Thank you.
My email address is the following jakerpomperada@gmail.com, jakerpomperada@aol.com, and jakerpomperada@yahoo.com.
My mobile number here in the Philippines is 09173084360.
Please subscribe to my channel https://www.youtube.com/channel/UCOs-lpOoIeJoh6gpJthPoGg
=================================================
Want to support my channel?
GCash Account
Jake Pomperada
09173084360
Paypal
https://paypal.me/jakerpomperada
Patreon
https://www.patreon.com/jakerpomperada
Thank you very much for your support
<!DOCTYPE html>
<html lang="en">
<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>BASIC MATH OPERATIONS IN JAVASCRIPT</title>
<style>
* {
box-sizing: border-box;
margin: 0;
padding: 0;
}
body {
min-height: 100vh;
display: flex;
justify-content: center;
align-items: center;
background-color: #EEEDED;
color: #333;
font-family: sans-serif;
}
main {
padding: 50px;
border-radius: 10px;
background-color: #fff;
min-width: 500px;
}
h1 {
margin-bottom: 5px;
font-size: 28px;
text-align: center;
}
h2 {
margin-bottom: 20px;
font-size: 20px;
text-align: center;
}
.block {
margin: 12px auto 0;
display: flex;
align-items: center;
width: 100%;
}
label {
display: flex;
align-items: center;
justify-content: center;
width: 35%;
line-height: 40px;
background-color: #434343;
color: #fff;
height: 45px;
}
input,
select {
padding: 10px;
width: 65%;
font-size: 14px;
border-radius: 0 5px 5px 0;
border: 2px solid #434343;
outline: none;
height: 45px;
}
.btn {
display: inline-block;
padding: 15px;
background-color: #FF3D57;
color: #fff;
outline: none;
border: none;
cursor: pointer;
width: 150px;
width: 50%;
font-size: 16px;
text-decoration: none;
text-align: center;
transition: all .2s;
}
.btnReset {
background-color: #FFCA00;
}
.btn:hover {
opacity: 0.9;
}
.output {
display: block;
width: 100%;
margin-top: 12px;
padding: 20px 0;
background-color: #434343;
font-size: 16px;
text-align:center;
color: #fff;
}
.hide {
display: none;
}
</style>
</head>
<body>
<main class="container">
<h1>BASIC MATH OPERATIONS IN JAVASCRIPT</h1>
<h2>Jake R. Pomperada, MAED-IT, MIT</h2>
<form action="" id="frmCalc">
<div class="block">
<label for="grade1">First Number:</label>
<input type="number" id="number1" required autofocus>
</div>
<div class="block">
<label for="grade2">Second Number:</label>
<input type="number" id="number2" required>
</div>
<div class="block">
<label for="operator">Select Operator:</label>
<select id="operator" required>
<option value="Add">Add</option>
<option value="Subtract">Subtract</option>
<option value="Multipy">Multipy</option>
<option value="Divide">Divide</option>
</select>
</div>
<div class="block">
<button type="submit" class="btn">CALCULATE</button>
<a href="" class="btn btnReset">RESET</a>
</div>
<div class="output hide"></div>
</form>
</main>
<script>
document.querySelector('#frmCalc').onsubmit = (e) => {
e.preventDefault()
let calc = document.querySelector('.output'),
operator = document.querySelector('#operator').value,
numbers = document.querySelectorAll(`[id*="number"]`),
total = 0, message;
switch (operator) {
case 'Add':
total = parseInt(numbers[0].value) + parseInt(numbers[1].value)
message = "The Sum is: "
break;
case 'Subtract':
total = parseInt(numbers[0].value) - parseInt(numbers[1].value)
message = "The difference is: "
break;
case 'Multipy':
total = parseInt(numbers[0].value) * parseInt(numbers[1].value)
message = "The product is: "
break;
case 'Divide':
total = parseInt(numbers[0].value) / parseInt(numbers[1].value)
message = "The qoutient is: "
break;
}
calc.classList.remove('hide')
calc.innerHTML = message+total.toFixed(2)
}
</script>
</body>
</html>
Post Views: 187
Post navigation
