∞ forever components

UI Micro-interactions

Swipe Card Stack

Tinder-style draggable card stack — drag the top card left/right to reveal NOPE/LIKE stamps; fling-away animates it off-screen and cycles to the next card.

cssmedium complexitymoderate motionpointer

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When to use it

Onboarding flows, product showcases, or any swipe-to-decide UI pattern on mobile or desktop.

When not to

Contexts requiring all cards to be visible simultaneously, or where auto-cycling motion would distract (remove the loop timer before shipping).

Working with an AI agent

Every component ships agent-ready metadata. An example instruction for this one:

Change the card data array to use brand colors and icons, e.g. replace data with [['#C08459','🚀'],['#ec4899','💎'],['#f59e0b','⚡']] and increase fling distance from 400 to 600. Theme: dark tokens live in :root, the light variant in :root[data-theme="light"]; ?theme=light or a {type:'forever:theme'} postMessage switches at runtime.

Safe to edit

  • card data (color + emoji pairs in data array)
  • fling threshold (Math.abs(dx)>50)
  • fling distance (dir*400)
  • stamp colors (.like color/#2BAB6B, .nope color/#ff5c7a)
  • idle demo cadence (FIRST=600 / DEMO_EVERY=2500 / IDLE_BACK=3600 ms)
  • theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

  • visibilitychange stop/loop guard
  • touch event listeners for mobile support
  • drag=null null-guard before fling
  • drag guard in tick() — the demo never fires while a card is held
  • theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)

Known limitations

  • shade() function is a no-op stub — gradient end color equals start color
  • Idle demo cycle runs by default (real input takes over, resumes after a few idle seconds) — remove the demo block for purely on-demand interaction
  • Card pool is only 5 items; idx wraps modulo data.length so short lists repeat quickly

swipecard-stackdraggesturetindermicrointeractiontouch

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