# zhouzi/TheaterJS

Typing animation mimicking human behavior.

Repository: https://github.com/zhouzi/TheaterJS
Canonical: https://ross.abutalabs.com/products/theaterjs
Homepage: https://codepen.io/Zhouzi/pen/JoRazP
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2023-01-04T09:25:10+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4262, "days_push": 1337, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3215, forks 153 (observed 2026-08-28T04:07:49.561451+00:00)

## What it is
TheaterJS is a small JavaScript library that creates typewriter-style typing animations mimicking human behavior, including variable speed, mistakes, and multiple actors. It works in the browser by animating text into DOM elements with scene-based sequencing and event callbacks.

## Use cases
- add a typewriter effect to a hero heading
- simulate a chat conversation typing animation on a landing page
- animate multiple characters typing dialogue with mistakes and pauses
- create a typing intro animation for a portfolio site
- loop a typing animation that replays automatically

## When to choose
- you need human-like typing with variable speed and typos
- you want multiple actors typing into different DOM elements with event hooks
- you want a tiny dependency-free-feeling library with simple scene API

## When to avoid
- you only need a basic typewriter effect and prefer a minimal snippet
- you need complex text animation or timeline features beyond typing
- you need a framework-integrated animation system like GSAP

## Facets
- artifact type: library
- maturity: maintenance
- function: animation, ui-components
- domain: frontend, web-development
- platform: browser
- tags: typing-effect, typewriter-animation, javascript, dom, nodejs

## Member repositories
- zhouzi/TheaterJS (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:49.561451+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:24:40.832830+00:00, confidence not recorded.
  - readme: https://github.com/zhouzi/TheaterJS (fetched 2026-08-28T04:07:49.561451+00:00, sha d68d09f3cdbc)
  - registry_npm: https://registry.npmjs.org/theaterjs (fetched 2026-08-29T09:38:18.394890+00:00, sha 309d68f17de6)
- Data as of 2026-08-30T08:39:29.467469+00:00.