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Cover image for Heartfelt Timer App with HTML/CSS/JS Only!
Programming with Shahan
Programming with Shahan

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Heartfelt Timer App with HTML/CSS/JS Only!

It’s made of glass and has a smooth bluish background.

It’s very simple and SUPER fun to make, even if you’re just starting out with coding!

Ready? Let’s get started! 🏊‍♂️


🧱 HTML

Our HTML code is the blueprint of a house.

It tells the browser what parts to include, like input boxes for minutes and seconds, and buttons for controlling the timer.

<!DOCTYPE html> <html> <head> <title>Beautiful Glass Timer App</title> <link rel="stylesheet" href="style.css"> </head> <body> <div class="glass-container"> <input type="number" id="minutesInput" placeholder="Minutes"> <input type="number" id="secondsInput" placeholder="Seconds"> <div class="button-container"> <button class="glass-button" onclick="incrementTime('minutes', 1)"></button> <button class="glass-button" onclick="decrementTime('minutes', 1)"></button> <button class="glass-button" onclick="incrementTime('seconds', 1)"></button> <button class="glass-button" onclick="decrementTime('seconds', 1)"></button> </div> <button class="glass-button" onclick="startTimer()">Start</button> <button class="glass-button" onclick="stopTimer()">Stop</button> <button class="glass-button" onclick="resetTimer()">Reset</button> <div id="display">Time: 00:00</div> </div> <script src="script.js"></script> </body> </html> 
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What’s Happening Here? 🤔

  • 🔢 <input> tags: These are for entering the minutes and seconds.
  • 🔼 Buttons: Each button has a job:
    • 🚦Start: Starts the countdown.
    • 🛑Stop: Pauses the countdown.
    • 🧹Reset: Sets the time back to 00:00.
    • ↑ and ↓: Increases or decreases the minutes and seconds.
  • <div> with id="display": This shows the time as it counts down. Think of it as the clock on a fancy timer.

🎨 CSS

CSS makes our timer app look stylish, like putting on a cool outfit! 👗

Here’s how we styled it to have a glassy, blue effect:

/* style.css */ body { font-family: Arial, sans-serif; background: linear-gradient(to bottom, #87CEEB, #000); /* Blue to black background */ color: #fff; height: 100vh; margin: 0; display: flex; justify-content: center; align-items: center; text-align: center; } .glass-container { background: rgba(255, 255, 255, 0.1); /* Transparent white background for glass effect */ padding: 20px 10px; border-radius: 15px; box-shadow: 0 8px 32px rgba(31, 38, 135, 0.37); /* Shadow for depth */ backdrop-filter: blur(10px); border: 1px solid rgba(255, 255, 255, 0.18); /* Subtle border */ width: 300px; } input[type="number"] { width: 90px; padding: 10px; margin: 5px; border: none; border-radius: 10px; background: rgba(255, 255, 255, 0.2); color: #000; text-align: center; transition: background 0.3s, box-shadow 0.3s; } input::placeholder { color: rgba(135, 206, 235, 0.7); /* Light blue placeholder */ } .glass-button { padding: 10px 22px; border-radius: 10px; background: rgba(135, 206, 235, 0.2); /* Soft blue background */ box-shadow: 0 4px 15px rgba(135, 206, 235, 0.5); border: none; color: #000; cursor: pointer; transition: background 0.3s, box-shadow 0.3s; } #display { font-size: 24px; background: rgba(0, 0, 0, 0.3); /* Dark background for contrast */ padding: 10px; border-radius: 10px; color: #87CEEB; /* Sky blue text */ } 
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How Does this Magic Work? 🪄

  • 🫗 Backgrounds: The linear gradient makes the background look like the sky fading into night. 🌌
  • 🥃 Glass Effect: The backdrop-filter: blur makes the box look frosted, like a window on a cold morning. ❄️
  • 🔘 Button Style: The buttons look like they’re made of glass with a soft shadow and rounded edges.

🧠 JavaScript

JavaScript gives life to our timer (making the buttons TAKE ACTION)! 🎬

// script.js let countdown; function startTimer() { const minutesInput = document.getElementById('minutesInput').value; const secondsInput = document.getElementById('secondsInput').value; let minutes = parseInt(minutesInput) || 0; let seconds = parseInt(secondsInput) || 0; let time = minutes * 60 + seconds; if (isNaN(time) || time <= 0) { alert('Please enter a positive number'); return; } clearInterval(countdown); // Stop any previous timer countdown = setInterval(() => { let mins = Math.floor(time / 60); let secs = time % 60; document.getElementById('display').textContent = `Time: ${String(mins).padStart(2, '0')}:${String(secs).padStart(2, '0')}`; if (time <= 0) { clearInterval(countdown); document.getElementById('display').textContent = 'Time: 00:00 - Time’s up!'; } time--; }, 1000); } function resetTimer() { clearInterval(countdown); document.getElementById('display').textContent = 'Time: 00:00'; } function incrementTime(type, amount) { const input = document.getElementById(`${type}Input`); let value = parseInt(input.value) || 0; input.value = Math.max(value + amount, 0); } function decrementTime(type, amount) { incrementTime(type, -amount); } function stopTimer() { clearInterval(countdown); // Stop the interval } 
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Breaking It Down 🧩

  • startTimer: Starts counting down from the time you set. If you put in 5 minutes, it converts it to 300 seconds and starts ticking down. ⏳
  • setInterval: This function counts down every second, like a stopwatch. 📅
  • resetTimer: Stops the timer and resets the display to 00:00.
  • incrementTime and decrementTime: Adds or subtracts time when you click the up or down buttons. Simple math! ➕➖
  • stopTimer: Pauses the timer when you press stop.

CONGRATULATIONS! 🎉

Now, you’ve got a stylish, fun-timer app that looks like it’s made of glass.

It’s perfect for timing anything, from reading to baking cookies! 🍪📖

Feel free to tweak it (change the colors, or add your own special touch!)

Thanks for the time to read this article. You can find me on 𝕏.

Read more: skills to become a backend developer in 6 months (roadmap)

KEEP CRUSHING IT!👊

Top comments (4)

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mince profile image
Mince

A bit confusing to use at first but a great job

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codewithshahan profile image
Programming with Shahan

Thanks for your valuable feedback!

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darkstarvue profile image
DarkStarVue

Cool project!

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codewithshahan profile image
Programming with Shahan

Thank you