Thursday, May 26, 2022

Decimal To Binary Using JavaScript

 A simple program asks the user to give a decimal value and then the program will convert the given decimal value into binary equivalent using JavaScript programming language.

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Program Listing

index.htm

<!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>Convert Decimal to Binary Using JavaScript</title>

    <style>

        * {

            box-sizing: border-box;

            margin: 0;

            padding: 0;

        }

        body {

            background-color: #d8dede;

            background-image: linear-gradient(315deg, #d8dede 0%, #e5bdf6 74%);

            min-height: 100vh;

            display: flex;

            justify-content: center;

            align-items: center;

            font-family: sans-serif;

        }

        form {

            background: #fff0f0;

            /* background: rgba(255, 255, 255, 0.4); */

            padding: 30px;

            border-radius: 10px;

        }

        h1, h2 {

            text-align: center;

        }

        h1 {

            text-transform: uppercase;

            margin-bottom: 5px;

            font-size: 30px;

        }

        h2 {

            margin-bottom: 20px;

            color: #ff9800;

            font-size: 20px;

            font-weight: 400;

        }

        label,

        input,

        button {

            display: block;

            font-size: 14px;

            outline: none;

        }

        label {

            padding: 5px 0;

        }

        .btn-group {

            display: flex;

        }

        input {

            border: 1px solid #ccc;

            border-right: none;

            border-radius:  3px 0 0 3px;

            width: 100%;

            padding: 10px;

        }

        button {

            padding: 10px 14px;

            background-color: #3D5A80;

            border: none;

            border-radius:  0 3px 3px 0;

            color: #fefefe;

            cursor: pointer;

        }

        .output {

            margin-top: 10px;

            background-color: #EE6C4D;

            padding: 15px;

            color: #fefefe;

            text-align: center;

            max-width: 330px;

            word-wrap: break-word;

            border-radius: 3px;

        }

        .hidden {

            display: none;

        }

    </style>

</head>

<body>

    <form action="" method="post">

        <h1>Convert<br>Decimal to Binary<br>Using JavaScript</h1>

        <h2>Jake R. Pomperada, MAED-IT, MIT</h2>

        <label for="txtNumber">Enter a number to convert:</label>

        <div class="btn-group">

            <input type="number" name="txtNumber" id="txtNumber" autofocus required>

            <button type="submit">Convert</button>

        </div>

        <div class="output hidden"></div>

    </form>

    

    <script>

        document.querySelector('form').onsubmit  = (e) => {

            e.preventDefault()


            let number = parseInt(document.querySelector('#txtNumber').value),

                output = document.querySelector('.output')

            

            result = number.toString(2)

            output.classList.remove("hidden")

            output.innerHTML = 'Binary Value: ' + result

        }

    </script>

</body>

</html>

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