Tooltip

Tier 2: Light-DOM

Anchored hover and focus hint with aria-describedby

Installation

$npx nnui add tooltip

copy

Interactive Preview & Code

Add to library favorites

<ui-tooltip>
  <button data-part="trigger" data-ui="button" data-variant="outline">
    Hover or Focus Me
  </button>
  <div data-part="content">
    Add to library favorites
  </div>
</ui-tooltip>

import React, { useState } from 'react';
import 'nnui-kit'; // Registers universal Light-DOM elements

export default function TooltipDemo() {
  const [tab, setTab] = useState('all');
  const [val, setVal] = useState(50);
  const [selected, setSelected] = useState('');
  const [query, setQuery] = useState('');

  return (
    <ui-tooltip>
      <button data-part="trigger" data-ui="button" data-variant="outline">
        Hover or Focus Me
      </button>
      <div data-part="content">
        Add to library favorites
      </div>
    </ui-tooltip>
  );
}

<script setup>
import { ref } from 'vue';
import 'nnui-kit'; // Registers universal Light-DOM elements

const activeTab = ref('all');
const sliderValue = ref(50);
const selected = ref('');
const query = ref('');

const handleSelect = (val) => {
  console.log('Selected:', val);
};
</script>

<template>
  <ui-tooltip>
    <button data-part="trigger" data-ui="button" data-variant="outline">
      Hover or Focus Me
    </button>
    <div data-part="content">
      Add to library favorites
    </div>
  </ui-tooltip>
</template>

<script>
  import 'nnui-kit';

  let activeTab = $state('all');
  let sliderValue = $state(50);
  let selected = $state('');
</script>

<ui-tooltip>
  <button data-part="trigger" data-ui="button" data-variant="outline">
    Hover or Focus Me
  </button>
  <div data-part="content">
    Add to library favorites
  </div>
</ui-tooltip>

How to Utilize

NNUI-KIT components live directly in the document Light DOM. You can use them via declarative HTML, with our first-class React wrapper, or platform-natively in Svelte, Vue, Astro, and HTMX:

React 18 & 19 (Next.js 15 App Router)

import 'nnui-kit/css';
import 'nnui-kit/client';
import { Tooltip } from 'nnui-kit/react';

Universal Web Components (Vue 3, Svelte 5, Astro, HTMX)

<!-- Automatically registers <ui-tooltip> and <nnui-tooltip> -->
import 'nnui-kit/css';
import 'nnui-kit/client';

Platform Features

Zero Shadow DOM

Element lives in the Light DOM. Tailwind and global CSS apply directly.

persist="url | local"

Add declarative persistence attribute to auto-sync state with URL search params.

sync="cross-tab"

Synchronize changes across all open browser tabs via BroadcastChannel.