test
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92
snowfall.js
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92
snowfall.js
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const snowflakes = true; // enable/disable snowflakes
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const randomSnowflakes = true; // enable random Snowflakes
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const enableColoredSnowflakes = true; // enable colored snowflakes on mobile devices
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const snowflakeCount = 25; // count of random extra snowflakes
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let msgPrinted = false; // flag to prevent multiple console messages
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// function to check and control the snowflakes
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function toggleSnowflakes() {
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const snowflakeContainer = document.querySelector('.snowflakes');
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if (!snowflakeContainer) return;
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const videoPlayer = document.querySelector('.videoPlayerContainer');
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const trailerPlayer = document.querySelector('.youtubePlayerContainer');
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const isDashboard = document.body.classList.contains('dashboardDocument');
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const hasUserMenu = document.querySelector('#app-user-menu');
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// hide snowflakes if video/trailer player is active or dashboard is visible
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if (videoPlayer || trailerPlayer || isDashboard || hasUserMenu) {
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snowflakeContainer.style.display = 'none'; // hide snowflakes
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if (!msgPrinted) {
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console.log('Snowflakes hidden');
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msgPrinted = true;
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}
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} else {
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snowflakeContainer.style.display = 'block'; // show snowflakes
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if (msgPrinted) {
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console.log('Snowflakes visible');
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msgPrinted = false;
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}
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}
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}
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// observe changes in the DOM
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const observer = new MutationObserver(toggleSnowflakes);
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// start observation
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observer.observe(document.body, {
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childList: true, // observe adding/removing of child elements
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subtree: true, // observe all levels of the DOM tree
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attributes: true // observe changes to attributes (e.g. class changes)
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});
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function addRandomSnowflakes(count) {
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const snowflakeContainer = document.querySelector('.snowflakes'); // get the snowflake container
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if (!snowflakeContainer) return; // exit if snowflake container is not found
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console.log('Adding random snowflakes');
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const snowflakeSymbols = ['❅', '❆']; // some snowflake symbols
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const snowflakeSymbolsMobile = ['❅', '❆', '❄']; // some snowflake symbols mobile version
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for (let i = 0; i < count; i++) {
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// create a new snowflake element
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const snowflake = document.createElement('div');
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snowflake.classList.add('snowflake');
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// pick a random snowflake symbol
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if (enableColoredSnowflakes) {
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snowflake.textContent = snowflakeSymbolsMobile[Math.floor(Math.random() * snowflakeSymbolsMobile.length)];
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} else {
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snowflake.textContent = snowflakeSymbols[Math.floor(Math.random() * snowflakeSymbols.length)];
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}
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// set random horizontal position, animation delay and size(uncomment lines to enable)
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const randomLeft = Math.random() * 100; // position (0% to 100%)
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//const randomSize = Math.random() * 1.5 + 0.5; // size (0.5em to 2em) //uncomment to enable random size
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const randomAnimationDelay = Math.random() * 8; // delay (0s to 8s)
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const randomAnimationDelay2 = Math.random() * 5; // delay (0s to 5s)
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// apply styles
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snowflake.style.left = `${randomLeft}%`;
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//snowflake.style.fontSize = `${randomSize}em`; //uncomment to enable random size
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snowflake.style.animationDelay = `${randomAnimationDelay}s, ${randomAnimationDelay2}s`;
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// add the snowflake to the container
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snowflakeContainer.appendChild(snowflake);
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}
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console.log('Random snowflakes added');
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}
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// initialize snowflakes and add random snowflakes after the DOM is loaded
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document.addEventListener('DOMContentLoaded', () => {
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if (!snowflakes) return; // exit if snowflakes are disabled
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toggleSnowflakes();
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const screenWidth = window.innerWidth; // get the screen width to detect mobile devices
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if (randomSnowflakes && screenWidth > 768) { // add random snowflakes only on larger screens
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addRandomSnowflakes(snowflakeCount);
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}
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});
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83
test.html
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83
test.html
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<!DOCTYPE html>
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<html lang="de">
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<head>
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<meta charset="UTF-8">
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<title>Schneesturm-Animation</title>
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<style>
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body {
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background-color: #000000;
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overflow: hidden;
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margin: 0;
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height: 100vh;
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}
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.snowflake {
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position: absolute;
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background-color: white;
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border-radius: 50%;
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pointer-events: none;
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}
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</style>
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</head>
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<body>
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<div id="snow-container"></div>
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<script>
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function createSnowflakes() {
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const container = document.getElementById('snow-container');
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const windowWidth = window.innerWidth;
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const windowHeight = window.innerHeight;
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for (let i = 0; i < 200; i++) {
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const snowflake = document.createElement('div');
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snowflake.classList.add('snowflake');
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// Zufällige Größe zwischen 1 und 3 Pixel
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const size = Math.random() * 3 + 1;
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snowflake.style.width = `${size}px`;
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snowflake.style.height = `${size}px`;
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// Zufällige Startposition
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snowflake.style.left = `${Math.random() * windowWidth}px`;
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snowflake.style.top = `${Math.random() * windowHeight}px`;
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container.appendChild(snowflake);
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animateSnowflake(snowflake);
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}
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}
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function animateSnowflake(snowflake) {
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const speed = Math.random() * 3 + 1;
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const sidewaysMovement = Math.random() * 2 - 1;
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function fall() {
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const currentTop = parseFloat(snowflake.style.top || 0);
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const currentLeft = parseFloat(snowflake.style.left || 0);
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// Fallen und seitliche Bewegung
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snowflake.style.top = `${currentTop + speed}px`;
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snowflake.style.left = `${currentLeft + sidewaysMovement}px`;
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// Wenn Schneeflocke den Bildschirm verlässt, setze sie zurück oben
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if (currentTop > window.innerHeight) {
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snowflake.style.top = '0px';
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snowflake.style.left = `${Math.random() * window.innerWidth}px`;
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}
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requestAnimationFrame(fall);
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}
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fall();
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}
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// Schneesturm beim Laden der Seite starten
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createSnowflakes();
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// Bei Fenstergrößenänderung anpassen
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window.addEventListener('resize', () => {
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document.getElementById('snow-container').innerHTML = '';
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createSnowflakes();
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});
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</script>
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</body>
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</html>
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