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theme_toggle_in_all_pages #94

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3f6ba52
theme_toggle_in_all_pages
ezhil-34 Oct 18, 2025
89d556a
Merge branch 'main' into ezhil
ezhil-34 Oct 21, 2025
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84 changes: 54 additions & 30 deletions projects/animated-clock/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -2,37 +2,61 @@
<html lang="en">

<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Animated Clock</title>
<link rel="stylesheet" href="./styles.css">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Animated Clock</title>
<link rel="stylesheet" href="./styles.css">
</head>

<body>
<main>
<h1>Animated Clock</h1>
<div class="controls">
<label for="timezone-select">Time Zone:</label>
<select id="timezone-select" aria-label="Select time zone">
<option value="local">Local Time</option>
<option value="UTC">UTC</option>
<option value="America/New_York">New York</option>
<option value="America/Los_Angeles">Los Angeles</option>
<option value="America/Chicago">Chicago</option>
<option value="Europe/London">London</option>
<option value="Europe/Paris">Paris</option>
<option value="Europe/Berlin">Berlin</option>
<option value="Asia/Tokyo">Tokyo</option>
<option value="Asia/Shanghai">Shanghai</option>
<option value="Asia/Kolkata">Mumbai</option>
<option value="Australia/Sydney">Sydney</option>
<option value="Pacific/Auckland">Auckland</option>
</select>
</div>
<canvas id="clock" width="240" height="240"></canvas>
<p class="notes">Smooth animation with requestAnimationFrame. Select a time zone to view different regional times.</p>
</main>
<script type="module" src="./main.js"></script>
</body>
<script>
const theme = localStorage.getItem('theme') || 'light';
if(theme === 'dark') {
document.documentElement.classList.add('dark-mode');
}
</script>

<button id="themeToggle" class="theme-toggle" aria-label="Toggle theme">
<svg class="sun-icon" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<circle cx="12" cy="12" r="5"/>
<line x1="12" y1="1" x2="12" y2="3"/>
<line x1="12" y1="21" x2="12" y2="23"/>
<line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/>
<line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/>
<line x1="1" y1="12" x2="3" y2="12"/>
<line x1="21" y1="12" x2="23" y2="12"/>
<line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/>
<line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/>
</svg>
<svg class="moon-icon" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"/>
</svg>
</button>

</html>
<main>
<h1>Animated Clock</h1>
<div class="controls">
<label for="timezone-select">Time Zone:</label>
<select id="timezone-select" aria-label="Select time zone">
<option value="local">Local Time</option>
<option value="UTC">UTC</option>
<option value="America/New_York">New York</option>
<option value="America/Los_Angeles">Los Angeles</option>
<option value="America/Chicago">Chicago</option>
<option value="Europe/London">London</option>
<option value="Europe/Paris">Paris</option>
<option value="Europe/Berlin">Berlin</option>
<option value="Asia/Tokyo">Tokyo</option>
<option value="Asia/Shanghai">Shanghai</option>
<option value="Asia/Kolkata">Mumbai</option>
<option value="Australia/Sydney">Sydney</option>
<option value="Pacific/Auckland">Auckland</option>
</select>
</div>
<canvas id="clock" width="240" height="240"></canvas>
<p class="notes">Smooth animation with requestAnimationFrame. Select a time zone to view different regional times.</p>
</main>

<script src="./main.js" type="module"></script>
</body>
</html>
104 changes: 61 additions & 43 deletions projects/animated-clock/main.js
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Original file line number Diff line number Diff line change
@@ -1,63 +1,81 @@
// ------------------------------
// CLOCK FUNCTION
// ------------------------------
const c = document.getElementById('clock');
const ctx = c.getContext('2d');
const timezoneSelect = document.getElementById('timezone-select');

let selectedTimezone = 'local';

timezoneSelect.addEventListener('change', (e) => {
selectedTimezone = e.target.value;
selectedTimezone = e.target.value;
});

function getCurrentTime() {
const now = new Date();
if (selectedTimezone === 'local') {
return now;
}

try {
const timeInTimezone = new Date(now.toLocaleString("en-US", {timeZone: selectedTimezone}));
const localTime = new Date(now.toLocaleString("en-US"));
const diff = localTime.getTime() - timeInTimezone.getTime();
return new Date(now.getTime() - diff);
} catch (error) {
return now;
}
const now = new Date();
if (selectedTimezone === 'local') return now;

try {
const timeInTimezone = new Date(now.toLocaleString("en-US", { timeZone: selectedTimezone }));
const localTime = new Date(now.toLocaleString("en-US"));
const diff = localTime.getTime() - timeInTimezone.getTime();
return new Date(now.getTime() - diff);
} catch (error) {
return now;
}
}

function draw() {
const now = getCurrentTime();
const w = c.width, h = c.height, r = w / 2;

ctx.clearRect(0, 0, w, h);
ctx.translate(r, r);
ctx.strokeStyle = '#93c5fd';
const now = getCurrentTime();
const w = c.width, h = c.height, r = w / 2;

ctx.clearRect(0, 0, w, h);
ctx.translate(r, r);
ctx.strokeStyle = '#93c5fd';
ctx.beginPath();
ctx.arc(0, 0, r - 6, 0, Math.PI * 2);
ctx.stroke();

function hand(angle, len, width) {
ctx.save();
ctx.rotate(angle);
ctx.beginPath();
ctx.arc(0, 0, r - 6, 0, Math.PI * 2);
ctx.lineWidth = width;
ctx.moveTo(0, 0);
ctx.lineTo(0, -len);
ctx.stroke();

function hand(angle, len, width) {
ctx.save();
ctx.rotate(angle);
ctx.beginPath();
ctx.lineWidth = width;
ctx.moveTo(0, 0);
ctx.lineTo(0, -len);
ctx.stroke();
ctx.restore();
}

const sec = now.getSeconds() + now.getMilliseconds() / 1000;
const min = now.getMinutes() + sec / 60;
const hr = ((now.getHours() % 12) + min / 60);

hand(hr * Math.PI / 6, r * 0.5, 4);
hand(min * Math.PI / 30, r * 0.75, 3);
hand(sec * Math.PI / 30, r * 0.85, 1);

ctx.setTransform(1, 0, 0, 1, 0, 0);
requestAnimationFrame(draw);
ctx.restore();
}

const sec = now.getSeconds() + now.getMilliseconds() / 1000;
const min = now.getMinutes() + sec / 60;
const hr = ((now.getHours() % 12) + min / 60);

hand(hr * Math.PI / 6, r * 0.5, 4);
hand(min * Math.PI / 30, r * 0.75, 3);
hand(sec * Math.PI / 30, r * 0.85, 1);

ctx.setTransform(1, 0, 0, 1, 0, 0);
requestAnimationFrame(draw);
}

ctx.strokeStyle = '#6ee7b7';
ctx.lineCap = 'round';
draw();

const themeToggle = document.getElementById('themeToggle');
const body = document.body;


const currentTheme = localStorage.getItem('theme') || 'light';
if (currentTheme === 'dark') {
body.classList.add('dark-mode');
}

themeToggle.addEventListener('click', () => {
body.classList.toggle('dark-mode');


const theme = body.classList.contains('dark-mode') ? 'dark' : 'light';
localStorage.setItem('theme', theme);
});
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