MediaWiki:Common.js

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document.addEventListener("DOMContentLoaded", function () {
            const container = document.body;
            const numberOfSnowflakes = 50;
            const maxAccumulatedHeight = 200;
            let accumulatedHeight = 0;

            for (let i = 0; i < numberOfSnowflakes; i++) {
                createSnowflake();
            }

            function createSnowflake() {
                const snowflake = document.createElement("div");
                snowflake.className = "snowflake";
                container.appendChild(snowflake);

                const startX = Math.random() * window.innerWidth;
                const startY = Math.random() * window.innerHeight;

                snowflake.style.left = `${startX}px`;
                snowflake.style.top = `${startY}px`;

                const size = Math.random() * 5 + 3;
                snowflake.style.width = `${size}px`;
                snowflake.style.height = `${size}px`;

                animateSnowflake(snowflake);
            }

            function animateSnowflake(snowflake) {
                const speed = 1 + Math.random() * 2;

                function moveSnowflake() {
                    const currentTop = parseFloat(snowflake.style.top);
                    const newTop = currentTop + speed;

                    snowflake.style.top = `${newTop}px`;

                    if (newTop > window.innerHeight) {
                        accumulatedHeight += window.innerHeight;
                        snowflake.style.top = `-${accumulatedHeight}px`;
                        snowflake.style.left = `${Math.random() * window.innerWidth}px`;

                        if (accumulatedHeight >= maxAccumulatedHeight) {
                            accumulatedHeight = 0;
                        }
                    }

                    requestAnimationFrame(moveSnowflake);
                }

                moveSnowflake();
            }
        });