57 JavaScript Background Effects

This Interactive Neon Grid Trail creates a sleek, cybernetic atmosphere ideal for tech portfolios or futuristic landing pages. It utilizes the HTML5 Canvas API to render a grid of invisible squares that light up in neon teal upon interaction. The effect features a “memory” mechanic where the illuminated cells hold their charge for a moment before gracefully fading back into the darkness, creating a satisfying trail behind the user’s cursor.

This Interactive Typographic Wave Footer combines generative art with functional UI design. It features a field of horizontal lines that behave like a liquid surface, reacting to the user’s cursor with a satisfying ripple effect. Hidden within the wave structure is a 3D-like topographic representation of text (“DICH”), generated by mapping pixel brightness from an off-screen canvas to the vertical position of the lines. It’s a sophisticated way to add depth and interactivity to a page footer or hero section.

This Neon 3D Tubes Cursor Trail brings high-end motion graphics to the web browser. Using the power of WebGL and Three.js, it generates a serpentine trail of glowing 3D geometry that fluidly follows the user’s input. The effect features dynamic lighting that casts soft glows on the tubes, and it includes a built-in interaction where clicking the screen instantly randomizes the color palette, keeping the visual experience fresh.

This Rising Bubbles Particle Background utilizes the tsParticles library to create a soothing, fluid animation reminiscent of carbonated water or an underwater scene. By leveraging the HTML5 Canvas API through a high-level configuration object, it renders performant particles that spawn from the bottom of the viewport and grow until they “pop.”

A horizontal scrolling gallery where the background color smoothly transitions to match the current image, triggered by the Intersection Observer API.

A cinematic hero section for a museum website featuring a synchronized text reveal animation powered by GSAP timelines and CustomEase. The layout utilizes fluid typography based on viewport width and intricate DOM segmentation, allowing syllables and UI elements to slide seamlessly into view over a looping background video.

A practical example of creating an organic and performant background using GSAP and SVG. Each line is animated along a unique trajectory with random parameters, creating an endless hypnotic motion.

A minimalistic example of event-driven SVG animation where the geometry is rebuilt both by a setInterval timer and user clicks - the key technique is the direct manipulation of the d attribute via setAttribute, which triggers a CSS transition to create organic movement without complex animation logic in JS.

Technical relevance: the use of GSAP to control strokeDashoffset on the mask with looping and different easing, - resulting in a stylized “wave” effect gliding over complex, pre-defined SVG Bézier curves.

This full-screen particle system uses the Canvas 2D context to draw short-lived, low-alpha rain streaks, relying on requestAnimationFrame for a performance-optimized background animation.

a stylish full-screen layout where the functional Swiper 3D slider is enhanced by a particle-effect gradient background, ensuring maximum visual engagement without complex frameworks.

An efficient WebGL/Three.js dynamic background implementation using a ready-made component. The demo focuses on programmatic adjustment of PBR parameters (Metalness, Roughness) and disabling secondary effects (setRain(false)) for optimization.

An implementation of Mouse Interaction with a grid of elements: each circle smoothly interpolates its radius towards a target using an ease factor for liquid-like animation, producing a smooth repulsion effect.

Dive into space with this optimized Canvas demo that procedurally generates shimmering stars, random shooting stars, and a colorful Milky Way, focusing on seamless performance and responsiveness.