// 鼠标移动出现雪花.html
<!DOCTYPE html> <html> <head> <title></title> <script src="https://wow.techbrood.com/libs/jquery/jquery-1.11.1.min.js"></script> </head> <body> <script type="text/javascript"> (function snowflakeCursor() { var possibleEmoji = ["❄️"] var width = window.innerWidth; var height = window.innerHeight; var cursor = { x: width / 2, y: width / 2 }; var particles = []; function init() { bindEvents(); loop(); } // Bind events that are needed function bindEvents() { document.addEventListener('mousemove', onMouseMove); document.addEventListener('touchmove', onTouchMove); document.addEventListener('touchstart', onTouchMove); window.addEventListener('resize', onWindowResize); } function onWindowResize(e) { width = window.innerWidth; height = window.innerHeight; } function onTouchMove(e) { if (e.touches.length > 0) { for (var i = 0; i < e.touches.length; i++) { addParticle(e.touches[i].clientX, e.touches[i].clientY, possibleEmoji[Math.floor(Math.random() * possibleEmoji.length)]); } } } function onMouseMove(e) { cursor.x = e.clientX; cursor.y = e.clientY; addParticle(cursor.x, cursor.y, possibleEmoji[Math.floor(Math.random() * possibleEmoji.length)]); } function addParticle(x, y, character) { var particle = new Particle(); particle.init(x, y, character); particles.push(particle); } function updateParticles() { // Updated for (var i = 0; i < particles.length; i++) { particles[i].update(); } // Remove dead particles for (var i = particles.length - 1; i >= 0; i--) { if (particles[i].lifeSpan < 0) { particles[i].die(); particles.splice(i, 1); } } } function loop() { requestAnimationFrame(loop); updateParticles(); } /** * Particles */ function Particle() { this.initialStyles = { "position": "absolute", "display": "block", "pointerEvents": "none", "z-index": "10000000", "fontSize": "16px", "will-change": "transform" }; // Init, and set properties this.init = function(x, y, character) { this.velocity = { x: (Math.random() < 0.5 ? -1 : 1) * (Math.random() / 2), y: (1 + Math.random()) }; this.lifeSpan = 120 + Math.floor(Math.random() * 60); //ms this.position = { x: x - 20, y: y - 20 }; this.element = document.createElement('span'); this.element.innerHTML = character; applyProperties(this.element, this.initialStyles); this.update(); document.body.appendChild(this.element); }; this.update = function() { this.position.x += this.velocity.x; this.position.y += this.velocity.y; this.velocity.x += (Math.random() < 0.5 ? -1 : 1) * 2 / 75; this.velocity.y -= Math.random() / 400; this.lifeSpan--; this.element.style.transform = "translate3d(" + this.position.x + "px," + this.position.y + "px,0) scale(" + (this.lifeSpan / 180) + ") rotate(" + (2 * this.lifeSpan) + "deg)"; } this.die = function() { this.element.parentNode.removeChild(this.element); } } /** * Utils */ // Applies css `properties` to an element. function applyProperties(target, properties) { for (var key in properties) { target.style[key] = properties[key]; } } init(); })(); </script> </body> </html>