53 JavaScript Background Effects
Background effects powered by JavaScript can bring depth, interactivity, and motion to your web pages. This collection of JavaScript background effects includes particle systems, animated gradients, parallax scrolling, and interactive canvases that react to user input or time-based triggers.
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Intersection Observer Example
A horizontal scrolling gallery where the background color smoothly transitions to match the current image, triggered by the Intersection Observer API.
Cinematic Hero Section In-View Animation
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.
Animated SVG Wave Background
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.
Melty Line Goodness
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.
Animated SVG Color Wave Effect
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.
Rain Particle Effect with HTML Canvas
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.
Cube Effect Slider (Swiper JS and tsParticles)
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.
Liquid Effect Background
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.
Canvas Proximity Mask Effect
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.
Night Sky with HTML Canvas
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.
