LemonadeJS
Hey HN, We just released v5 of LemonadeJS, a micro-reactive library (~5.5KB compressed, no dependencies) that brings reactivity, scoped state, and JSX support to browser-native JavaScript. Key Features in v5: - Private reactive state for components - Scoped events for modularity - JSX support (via a Babel plugin) - children argument for nested components - Template literal interpolation - Improved DOM rendering performance Use it with plain JS, TypeScript, or JSX — no build step required. Ideal for browser tools, widgets, or building fast UIs without bundlers.…
LemonadeJS launched on May 2, 2025 with 21 votes, #814 of 7,905 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
LemonadeJS is a lightweight vanilla javascript reactive micro library (7Kb) that helps the integration between the JavaScript and the HTML..
Reactive components with React-like patterns at ~9 KB gzip. Zero dependencies, zero build step, designed for humans and AI agents.
Reactive components with a React-like API in ~9 KB gzip : zero dependencies, no build step. Designed for both human developers and AI agents. import { html, mount } from 'lemonadejs' ; const Counter = (props, { state }) => { const count = state( 0 ); return html`<div> <h1>${count}</h1> <button onclick="${() => count.value++}">+1</button> </div>`; }; mount(Counter, document.getElementById( 'app' )); ● live: this exact code, running on this page Every component is published with a typed contract and checked against it. The result is machine-readable JSON, consumable by humans, agents, and CI. component('switch', { bind: false, label: '', onchange: Function, api: { toggle: Function }, }, fn);…from lemonadejs.com
In the maker’s words, at launch
Hey HN, We just released v5 of LemonadeJS, a micro-reactive library (~5.5KB compressed, no dependencies) that brings reactivity, scoped state, and JSX support to browser-native JavaScript. Key Features in v5: - Private reactive state for components - Scoped events for modularity - JSX support (via a Babel plugin)…
Does a similar job
all alternatives →- LALemonadeJS – A micro JavaScript library for building web interfaces2021 · lemonadejs.net · ▲57
Reactive components with React-like patterns at ~9 KB gzip. Zero dependencies, zero build step, designed for humans and AI agents.
LemonadeJS 2 Micro(6Kb) Reactive Library. No Transpile, No Dependencies2022 · github.com · ▲5LemonadeJS is a 7KB reactive JavaScript micro-library offering two-way data binding. It is dependency-free, does not require transpiling, and works with webpack or directly in the browser. - lemonadejs/lemonadejs
Swap.js – a JavaScript micro-framework (HTML fragments over the wire)2023 · github.com · ▲127Hi HN! I created this lib in the need of a simple and tiny framework to easily do AJAX-style navigation / replacement of fragments in the page, in a web application. For people who don't want to use client-side-rendering and complex frameworks à la React, there are nowadays a few "HTML-over-the-wire" libraries, like HTMX, Unpoly or this super-tiny one Swap.js :) One other key thing is that no external tool is needed: no bundler, no webpack, no TypeScript compiler, no minification needed. Just write HTML, JS (+ your preferred server-side language: PHP, Python, etc.) and it works. The…
Umbrella JS, a 2.5kb jQuery alternative2018 · umbrellajs.com · ▲132:umbrella: Lightweight javascript library for DOM manipulation and events
Cami.js – A no build, web component based reactive framework2023 · github.com · ▲113Hi Everyone! My main motivation for making this was that I wanted something as powerful as Svelte or React but I wanted no build steps, no JSON API, and I wanted something as close to vanilla js as much as possible. I'm mainly a backend developer, and I wanted to simply return html with some interactive islands when I need to (whose components get 'hydrated' with by backend language's templates). Some key ideas: • It's centered around light dom web components • Uses a "reactive element", which uses observables for fine-grained reactivity • Rendering is done through lit-html's tagged…
Arrow JavaScript, Reactivity Without the Framework2025 · arrow-js.com · ▲32A tiny ~2kb library for building reactive interfaces in native JavaScript
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