special effects - 鼠标移动，出现泡泡拖尾_animate鼠标事件拖尾代码-优快云博客

本文链接：https://blog.youkuaiyun.com/Jie_1997/article/details/125740211

本文介绍如何使用HTML5和JavaScript实现在鼠标移动时屏幕生成跟随的动态泡泡效果，通过粒子系统模拟拖尾效果，适合前端开发入门者学习。

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鼠标移动，出现泡泡拖尾

一. 效果图
二. 实现代码

一. 效果图

在这里插入图片描述

二. 实现代码

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>鼠标移动出现泡泡拖尾</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        html {
            background-color: #c3ecff;
        }
    </style>
</head>

<body>
    <script>
        (function bubblesCursor() {

            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);
                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);
                    }
                }
            }

            function onMouseMove(e) {
                cursor.x = e.clientX;
                cursor.y = e.clientY;

                addParticle(cursor.x, cursor.y);
            }

            function addParticle(x, y) {
                var particle = new Particle();
                particle.init(x, y);
                particles.push(particle);
            }

            function updateParticles() {

                // Update
                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.lifeSpan = 250; //ms
                this.initialStyles = {
                    "position": "absolute",
                    "display": "block",
                    "pointerEvents": "none",
                    "z-index": "10000000",
                    "width": "5px",
                    "height": "5px",
                    "background": "#e6f1f7",
                    "box-shadow": "-1px 0px #6badd3, 0px -1px #6badd3, 1px 0px #3a92c5, 0px 1px #3a92c5",
                    "border-radius": "1px",
                    "will-change": "transform"
                };

                // Init, and set properties
                this.init = function (x, y) {

                    this.velocity = {
                        x: (Math.random() < 0.5 ? -1 : 1) * (Math.random() / 10),
                        y: (-.4 + (Math.random() * -1))
                    };

                    this.position = { x: x - 10, y: y - 10 };

                    this.element = document.createElement('span');
                    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;

                    // Update velocities
                    this.velocity.x += (Math.random() < 0.5 ? -1 : 1) * 2 / 75;
                    this.velocity.y -= Math.random() / 600;
                    this.lifeSpan--;

                    this.element.style.transform = "translate3d(" + this.position.x + "px," + this.position.y + "px,0) scale(" + (0.2 + (250 - this.lifeSpan) / 250) + ")";
                }

                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>