雪花代码
动画效果
代码
<!DOCTYPE html><html><head><style>body {background-color: #000000;}.snowflake {position: absolute;font-size: 10px;color: #FFFFFF;text-shadow: 1px 1px 1px #000000;user-select: none;}</style></head><body><script>function random(min, max) {return Math.floor(Math.random() * (max - min + 1)) + min;}function Snowflake() {this.characters = "❄️";this.x = random(0, window.innerWidth);this.y = random(-200, -100);this.speed = random(1, 5);this.element = document.createElement("span");this.element.classList.add("snowflake");this.element.innerHTML = this.characters;document.body.appendChild(this.element);}Snowflake.prototype.update = function() {this.y += this.speed;this.element.style.top = this.y + "px";this.element.style.left = this.x + "px";if (this.y > window.innerHeight) {this.y = random(-200, -100);this.x = random(0, window.innerWidth);}};var snowflakes = [];for (var i = 0; i < 100; i++) {snowflakes.push(new Snowflake());}setInterval(function() {snowflakes.forEach(function(snowflake) {snowflake.update();});}, 50);</script></body></html>
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