Temperature Unit using Bootstrap, TailwindCSS & JavaScript

Monday, September 09, 2024

Temperature Unit App is a temperature conversion tool that allows users to convert temperature values between various temperature units. Using a simple and intuitive interface, the app supports conversion between various temperature scales, including:

Celsius (°C): A temperature scale commonly used in many scientific fields and everyday life.

Fahrenheit (°F): The unit more commonly used in the United States for everyday purposes.

Kelvin (K): An absolute temperature scale used in science, especially in physics and chemistry.

Rankine (°R): A temperature scale similar to Kelvin but using degrees Fahrenheit.

Reaumur (°Ré): A historical temperature scale that was once widely used in Europe.

Delisle (°De): A historical temperature scale calculated from the boiling point of water.

Newton (°N): A temperature scale developed by Isaac Newton.

Rømer (°Rø): A historical temperature scale used primarily in Scandinavia.

Triple Point of Water (K): A special condition where water can exist in three phases (solid, liquid, gas) at a certain pressure.

In this blog post, I’ll walk you through creating a responsive Temperature Unit app using Bootstrap 5, Tailwind CSS, and JavaScript. We’ll replicate the key features of a temperature conversion app, including input for temperature values, choice of source and destination temperature units, and real-time conversion results. We’ll also build an intuitive interface, so users can customize it to their preferences.

As you work on this project, you’ll learn how to structure and style websites effectively to ensure they look great on all devices.

Key Features:

Temperature Input: User can enter the temperature value to be converted.
Source and Destination Unit Selection: Allows the user to select the source temperature unit and destination unit for the conversion.
Automatic Conversion: After the user selects the unit and enters the temperature value, the application automatically calculates the conversion result.
Responsive Display: Using a combination of Bootstrap and TailwindCSS, this app adapts its appearance for both desktop and mobile devices.
Accurate Conversion Results: Uses careful JavaScript logic to ensure accurate temperature conversion results between different scales.

With these features, your Temperature Unit app will have complete functionality and an attractive design, making it not only useful but also fun to use. Using Bootstrap, TailwindCSS, and JavaScript, this app provides a responsive and interactive experience for users when converting temperatures between different units.

Why Build a Temperature Unit in Bootstrap, TailwindCSS & JavaScript?

By building this Temperature Unit project using Bootstrap, TailwindCSS, and JavaScript, you can gain the following skills:

Bootstrap: Leverage Bootstrap components to build responsive and professional interfaces.
TailwindCSS: Learn how to integrate TailwindCSS to customize your design flexibly and quickly.
JavaScript Logic for Conversion: Master the logic of calculating temperature conversions between different scales using JavaScript.
Building Interactive Forms: Create forms that handle user input and display results dynamically.
User Experience (UX) Improvements: Create layouts and elements that make the app more intuitive and easy to use.

This project will provide a solid foundation in responsive web design and front-end development, paving the way for more complex web projects in the future. Good luck, and may the skills you gain from building this Temperature Unit app be useful in developing your future projects!

Steps to build a Temperature Unit in Bootstrap, TailwindCSS & JavaScript

Here are the complete steps to create a Temperature Unit application using Bootstrap 5, TailwindCSS, and JavaScript:

1. Create Basic HTML Structure

Create a new HTML file, for example index.html, and create the basic HTML structure using the following code:

index.html

                            
<!DOCTYPE html>
<!-- Coding By CodingIndo - https://codingindo.vercel.app/ -->
<html lang="en">
<head>
    <!-- Meta tag for character encoding -->
    <meta charset="UTF-8">
    <!-- Meta tag for setting the viewport to be responsive on mobile devices -->
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- Page title -->
    <title>Temperature Unit</title>
    <!-- Link to local CSS file -->
    <link rel="stylesheet" href="style.css">
    <!-- Link to Bootstrap CSS -->
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
    <!-- Link to TailwindCSS -->
    <link href="https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css" rel="stylesheet">
</head>
<body>
    <!-- Temperature converter card -->
    <div class="converter-card">
        <!-- Converter title -->
        <h2 class="text-center text-2xl font-bold mb-4">Temperature Unit</h2>
        <!-- Form converter -->
        <form id="converterForm" class="space-y-4">
            <!-- Temperature input -->
            <div class="form-group">
                <label for="temperature" class="form-label">Enter Temperature:</label>
                <input type="number" id="temperature" class="form-control" placeholder="Enter value" required>
            </div>
            <!-- Original unit selection -->
            <div class="form-group">
                <label for="fromUnit" class="form-label">From Unit:</label>
                <select id="fromUnit" class="form-select">
                    <option value="C">Celsius (°C)</option>
                    <option value="F">Fahrenheit (°F)</option>
                    <option value="K">Kelvin (K)</option>
                    <option value="R">Rankine (°R)</option>
                    <option value="Re">Reaumur (°Ré)</option>
                    <option value="De">Delisle (°De)</option>
                    <option value="N">Newton (°N)</option>
                    <option value="Ro">Rømer (°Rø)</option>
                    <option value="T">Triple Point of Water (K)</option>
                </select>
            </div>
            <!-- Destination unit selection -->
            <div class="form-group">
                <label for="toUnit" class="form-label">To Unit:</label>
                <select id="toUnit" class="form-select">
                    <option value="C">Celsius (°C)</option>
                    <option value="F">Fahrenheit (°F)</option>
                    <option value="K">Kelvin (K)</option>
                    <option value="R">Rankine (°R)</option>
                    <option value="Re">Reaumur (°Ré)</option>
                    <option value="De">Delisle (°De)</option>
                    <option value="N">Newton (°N)</option>
                    <option value="Ro">Rømer (°Rø)</option>
                    <option value="T">Triple Point of Water (K)</option>
                </select>
            </div>
            <!-- Convert button -->
            <div class="form-group text-center">
                <button type="submit" class="btn btn-primary btn-lg w-100">Convert</button>
            </div>
        </form>
        <!-- Conversion result -->
        <div id="result" class="mt-4 text-center"></div>
    </div>
    <!-- Link to local JavaScript file -->
    <script src="script.js"></script>
    <!-- Link to Bootstrap JavaScript -->
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script>
</body>
</html>

Explanation

Number	Line of Code	Explanation

2. Add CSS for Converter View

Add CSS styling to give your app a nice look using a combination of Bootstrap and TailwindCSS:

style.css

                            
/* Sets styles for the body element */
body {
    background: linear-gradient(135deg, #667eea, #764ba2);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Poppins', sans-serif;
}

/* Sets styles for elements with the converter-card class */
.converter-card {
    background-color: white;
    border-radius: 1rem;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    max-width: 400px;
    width: 100%;
}

/* Sets the style for the h2 element inside the converter-card */
.converter-card h2 {
    color: #764ba2;
}

/* Sets the style for elements with class btn-primary */
.btn-primary {
    background-color: #667eea;
    border-color: #667eea;
}

/* Sets the style for elements with class btn-primary on hover */
.btn-primary:hover {
    background-color: #764ba2;
    border-color: #764ba2;
}

/* Sets the style for the element with the id result */
#result {
    color: #764ba2;
    font-weight: bold;
    font-size: 1.25rem;
}

Explanation

Number	Line of Code	Explanation

3. Add JavaScript for Temperature Conversion

Added JavaScript script to handle temperature conversion logic:

script.js

                            
// Add event listener for form submit
document.getElementById('converterForm').addEventListener('submit', function(e) {
    e.preventDefault();
    // Get the temperature value from the input
    const temp = parseFloat(document.getElementById('temperature').value);
    // Get the original unit value from the input
    const fromUnit = document.getElementById('fromUnit').value;
    // Get the target unit value from the input
    const toUnit = document.getElementById('toUnit').value;
    let result;
    // Check if the temperature value is valid
    if (isNaN(temp)) {
        result = "Silakan masukkan suhu yang valid.";
    } else {
        // Convert temperature
        result = convertTemperature(temp, fromUnit, toUnit);
    }
    // Display the conversion result
    document.getElementById('result').textContent = result;
});

// Function to convert temperature
function convertTemperature(temp, from, to) {
    let kelvin;

    // Converts the original units to Kelvin
    switch (from) {
        case 'C': kelvin = temp + 273.15; break;
        case 'F': kelvin = (temp + 459.67) * 5/9; break;
        case 'K': kelvin = temp; break;
        case 'R': kelvin = temp * 5/9; break;
        case 'Re': kelvin = temp * 1.25 + 273.15; break;
        case 'De': kelvin = 373.15 - temp * 2/3; break;
        case 'N': kelvin = temp * 100/33 + 273.15; break;
        case 'Ro': kelvin = (temp - 7.5) * 40/21 + 273.15; break;
        case 'T': kelvin = 273.16; break;
        default: return "Unit input tidak valid.";
    }

    let finalTemp;
    // Convert from Kelvin to target units
    switch (to) {
        case 'C': finalTemp = kelvin - 273.15; break;
        case 'F': finalTemp = kelvin * 9/5 - 459.67; break;
        case 'K': finalTemp = kelvin; break;
        case 'R': finalTemp = kelvin * 9/5; break;
        case 'Re': finalTemp = (kelvin - 273.15) * 0.8; break;
        case 'De': finalTemp = (373.15 - kelvin) * 3/2; break;
        case 'N': finalTemp = (kelvin - 273.15) * 33/100; break;
        case 'Ro': finalTemp = (kelvin - 273.15) * 21/40 + 7.5; break;
        case 'T': finalTemp = 273.16; break;
        default: return "Unit output tidak valid.";
    }

    // Returns the conversion result in string format
    return `${temp} ${from} = ${finalTemp.toFixed(2)} ${to}`;
}

Explanation

Number	Line of Code	Explanation

4. Run Your Project

Open the index.html file in a browser. Now, the temperature converter application can be used to convert between various temperature units with an attractive display.

Additional Notes

Compatibility: This Temperature Unit app is designed to be compatible with a wide range of modern browsers. Be sure to test across multiple devices and browsers to ensure consistent appearance and functionality.
Customizability: Using a combination of Bootstrap and TailwindCSS allows you to easily customize the look and style of your app to your needs. You can quickly add or change color schemes, fonts, or layouts.
Extendability: The application can be easily extended to support more types of temperature conversions or even integrate other conversions, such as pressure or length. The simple JavaScript structure allows you to add new logic without much change.
Accessibility: Make sure to always pay attention to accessibility aspects such as the use of labels on forms, contrasting colors, and easy-to-use navigation with the keyboard. This will make your application accessible to more users.
Performance: Since this app uses JavaScript for its conversion logic, be sure to optimize the code to keep the app fast and responsive, especially if you add other features or scale your conversions.

By keeping these notes in mind, you will be able to create better, easier-to-use applications that can meet the needs of a wide range of users. Happy developing!

Conclusion and final words

The Temperature Unit app offers a practical and efficient solution for converting temperatures between various scales, both common ones like Celsius and Fahrenheit and more specialized ones like Kelvin, Rankine, and others. With a simple interface and powered by modern technologies like Bootstrap, TailwindCSS, and JavaScript, the app ensures a comfortable and responsive user experience across devices.

As a useful conversion tool, Temperature Unit not only makes everyday calculations easier but also acts as an educational medium in understanding the differences in temperature scales. With accurate results and an attractive appearance, this application is ready to help anyone, whether students, professionals, or hobbyists, in completing their temperature conversion needs easily.

Thus, this application is the right choice for those of you who want a reliable temperature conversion tool. We hope this tool can facilitate your various activities in understanding and processing temperature data, both for learning and work purposes. Happy using and hopefully useful!

If you are having trouble creating the Temperature Unit app using Bootstrap, TailwindCSS, and JavaScript, you can download the source code files for this project for free by clicking the “Download” button. You can also view a live demo of this app by clicking the “View Live” button to see how the design and functionality of the app work in practice.

By accessing the source code files and the live demo, you can easily understand the code implementation and customize the project according to your needs. Feel free to explore the code, experiment with styles, and modify features to improve your skills in HTML, CSS, and JavaScript.

This is a great opportunity to learn more about integrating CSS frameworks with JavaScript and to deepen your understanding of responsive web design. Happy learning and experimenting!

View Live Demo