@reach/auto-id is a utility package designed to generate unique IDs for React components. This is particularly useful for accessibility purposes, such as associating form inputs with their labels or managing ARIA attributes.

What are @reach/auto-id's main functionalities?

Generate Unique IDs

The `useId` hook generates a unique ID that can be used to associate a label with an input field, ensuring accessibility compliance.

import { useId } from '@reach/auto-id';

function MyComponent() {
  const id = useId();
  return (
    <div>
      <label htmlFor={id}>Name:</label>
      <input id={id} type="text" />
    </div>
  );
}

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@reach/auto-id

Docs | Source

Autogenerate IDs to facilitate WAI-ARIA and server rendering.

A string can be supplied as an argument to be useId in lieu of the auto-generated ID. This is handy for accepting user-provided prop IDs that need to be deterministic.

import { useId } from "@reach/auto-id";

function FormField(props) {
	const id = useId(props.id);
	return (
		<React.Fragment>
			<label htmlFor={id}>{props.label}</label>
			<input type={props.type} name={props.name} id={id} />
		</React.Fragment>
	);
}

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Last updated on 12 Oct 2022

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