Components/Alert

Alert

Tier 0: Zero-JS

Callout banner for status and feedback messages

Installation

$npx nnui add alert

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Interactive Preview & Code

ℹ️

Platform-Native Update

NNUI-KIT v1.0.0 is live with zero Shadow DOM accessibility traps.

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Bundle Optimized

Your project bundle has been built in 145ms with 6.2 KB gzip size.

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<!-- Default Alert -->
<div data-ui="alert" role="status">
  <span data-part="alert-icon">ℹ️</span>
  <div data-part="alert-content">
    <h5 data-part="alert-title">Platform-Native Update</h5>
    <p data-part="alert-desc">NNUI-KIT v1.0.0 is live.</p>
  </div>
</div>

<!-- Destructive Error Alert -->
<div data-ui="alert" data-variant="destructive" role="alert">
  <span data-part="alert-icon">⚠️</span>
  <div data-part="alert-content">
    <h5 data-part="alert-title">Authentication Failed</h5>
    <p data-part="alert-desc">Your session has expired.</p>
  </div>
</div>

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

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

  return (
    <!-- Default Alert -->
    <div data-ui="alert" role="status">
      <span data-part="alert-icon">ℹ️</span>
      <div data-part="alert-content">
        <h5 data-part="alert-title">Platform-Native Update</h5>
        <p data-part="alert-desc">NNUI-KIT v1.0.0 is live.</p>
      </div>
    </div>

    <!-- Destructive Error Alert -->
    <div data-ui="alert" data-variant="destructive" role="alert">
      <span data-part="alert-icon">⚠️</span>
      <div data-part="alert-content">
        <h5 data-part="alert-title">Authentication Failed</h5>
        <p data-part="alert-desc">Your session has expired.</p>
      </div>
    </div>
  );
}

<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>
  <!-- Default Alert -->
  <div data-ui="alert" role="status">
    <span data-part="alert-icon">ℹ️</span>
    <div data-part="alert-content">
      <h5 data-part="alert-title">Platform-Native Update</h5>
      <p data-part="alert-desc">NNUI-KIT v1.0.0 is live.</p>
    </div>
  </div>

  <!-- Destructive Error Alert -->
  <div data-ui="alert" data-variant="destructive" role="alert">
    <span data-part="alert-icon">⚠️</span>
    <div data-part="alert-content">
      <h5 data-part="alert-title">Authentication Failed</h5>
      <p data-part="alert-desc">Your session has expired.</p>
    </div>
  </div>
</template>

<script>
  import 'nnui-kit';

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

<!-- Default Alert -->
<div data-ui="alert" role="status">
  <span data-part="alert-icon">ℹ️</span>
  <div data-part="alert-content">
    <h5 data-part="alert-title">Platform-Native Update</h5>
    <p data-part="alert-desc">NNUI-KIT v1.0.0 is live.</p>
  </div>
</div>

<!-- Destructive Error Alert -->
<div data-ui="alert" data-variant="destructive" role="alert">
  <span data-part="alert-icon">⚠️</span>
  <div data-part="alert-content">
    <h5 data-part="alert-title">Authentication Failed</h5>
    <p data-part="alert-desc">Your session has expired.</p>
  </div>
</div>

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 { Alert } from 'nnui-kit/react';

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

<!-- Automatically registers <ui-alert> and <nnui-alert> -->
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.