59 JavaScript background effects

JavaScript background effects are dynamic visuals that enhance the appearance and interactivity of web pages. Developers use JavaScript along with CSS, Canvas, WebGL, or libraries like Particles.js to create animated backgrounds, gradients, particle systems, parallax scrolling, and interactive motion effects. These effects are widely used in landing pages, portfolios, dashboards, and creative web applications to engage users and add depth to the interface. Explore a collection of 59 creative JavaScript background effect examples that combine motion, interactivity, and modern design for visually appealing and immersive web experiences.