oBerry

Why oBerry?

Modern frontend development often forces a tradeoff:

• React / frameworks → powerful, but heavy for small projects
• jQuery → simple, but outdated and not reactive
• Vanilla JS → flexible, but repetitive and tedious for DOM-heavy apps

oBerry gives you a modern, reactive, jQuery-like API without needing a build setup or full framework.

With oBerry, you can:

• manipulate the DOM with a clean, chainable API
• use built-in fine-grained reactivity (no external state library)
• use components without a framework overhead
• write TypeScript-first code right out of the box

Full documentation: oberry.pages.dev

Features

• Lightweight (~3.5KB gzipped)
• jQuery-like API - Familiar syntax for easy migration
• Built-in signal-based reactivity system
• TypeScript-first approach

Quick start

You can create a new oBerry project with:

npm create oberry

Or add oBerry to an existing one:

npm install oberry

Examples

import { $, $ref } from 'oberry';

const count = $ref(0);

$("#counter").bind(count);

$("#increment-btn").on("click", () => {
  count(prev => prev + 1);
});

$("#decrement-btn").on("click", () => {
  count(prev => prev - 1);
});

---

import { $ref, $component } from "oberry";

$component(
  "x-counter",
  ({ $, props, onMounted }) => {
    const count = $ref<number>(Number(props.start ?? 0));

    onMounted(() => {
      $("#counter").bind(count);

      $("button").on("click", () => {
        count(prev => prev + 1);
      });
    });

    return `
      <h1 id="counter">${props.start ?? 0}</h1>
      <button>+</button>
    `
  }
);

<x-counter start="10"></x-counter>