Installation

# npm
npm install @tailwindui/react

# Yarn
yarn add @tailwindui/react

Components

This project is still in early development, but the plan is to build out all of the primitives we need to provide interactive React examples of all of the components included in Tailwind UI, the commercial component directory that helps us fund the development of our open-source work like Tailwind CSS.

This includes things like:

• Dropdowns
• Toggles
• Modals
• Tabs
• Slide-overs
• Mobile menus
• Listboxes
• Accordions

...and more in the future.

We decided to start with an enter/leave Transition component that is tailor-made for Tailwind's utility-first CSS approach, to help bring the React experience up to parity with what's already possible in the Vue ecosystem.

We'll be continuing to develop new components on an on-going basis, with a goal of reaching a pretty fleshed out v1.0 by the end of the year.

Transition

The Transition component lets you add enter/leave transitions to conditionally rendered elements, using CSS classes to control the actual transition styles in the different stages of the transition.

import { Transition } from '@tailwindui/react'
import { useState } from 'react'

function MyComponent() {
  const [isOpen, setIsOpen] = useState(false)

  return (
    <button onClick={() => setIsOpen(!isOpen)}>
      Toggle
    </button>
    <Transition
      show={isOpen}
      enter="transition-opacity duration-75"
      enterFrom="opacity-0"
      enterTo="opacity-100"
      leave="transition-opacity duration-150"
      leaveFrom="opacity-100"
      leaveTo="opacity-0"
    >
      I will fade in and out
    </Transition>
  )
}

Showing and hiding the Transition content

Wrap the content that should be conditionally rendered in a <Transition> component, and use the show prop to control whether the content should be visible or hidden.

import { Transition } from '@tailwindui/react'
import { useState } from 'react'

function MyComponent() {
  const [isOpen, setIsOpen] = useState(false)

  return (
    <button onClick={() => setIsOpen(!isOpen)}>
      Toggle
    </button>
    <Transition
      show={isOpen}
      // ...
    >
      I will fade in and out
    </Transition>
  )
}

The Transition component will render a div by default, but you can use the as prop to render a different element instead if needed. Any other HTML attributes (like className) can be added directly to the Transition the same way they would be to regular elements.

import { Transition } from '@tailwindui/react'
import { useState } from 'react'

function MyComponent() {
  const [isOpen, setIsOpen] = useState(false)

  return (
    <button onClick={() => setIsOpen(!isOpen)}>
      Toggle
    </button>
    <Transition
      show={isOpen}
      as="a"
      href="/my-url"
      className="font-bold"
      // ...
    >
      I will fade in and out
    </Transition>
  )
}

If you'd prefer not to render an additional element at all, you can pass your children as a function instead which will receive a ref that you need to attach to your root node:

import { Transition } from '@tailwindui/react'
import { useState } from 'react'

function MyComponent() {
  const [isOpen, setIsOpen] = useState(false)

  return (
    <button onClick={() => setIsOpen(!isOpen)}>
      Toggle
    </button>
    <Transition
      show={isOpen}
      // ...
    >
      {ref => <div ref={ref}>{/* Your content goes here*/}</div>}
    </Transition>
  )
}

Be sure to attach the ref or your transitions will not work correctly.

Animating transitions

By default, a Transition will enter and leave instantly, which is probably not what you're looking for if you're using this library.

To animate your enter/leave transitions, add classes that provide the styling for each phase of the transitions using these props:

• enter: Applied the entire time an element is entering. Usually you define your duration and what properties you want to transition here, for example transition-opacity duration-75.
• enterFrom: The starting point to enter from, for example opacity-0 if something should fade in.
• enterTo: The ending point to enter to, for example opacity-100 after fading in.
• leave: Applied the entire time an element is leaving. Usually you define your duration and what properties you want to transition here, for example transition-opacity duration-75.
• leaveFrom: The starting point to leave from, for example opacity-100 if something should fade out.
• leaveTo: The ending point to leave to, for example opacity-0 after fading out.

Here's an example:

import { Transition } from '@tailwindui/react'
import { useState } from 'react'

function MyComponent() {
  const [isOpen, setIsOpen] = useState(false)

  return (
    <button onClick={() => setIsOpen(!isOpen)}>
      Toggle
    </button>
    <Transition
      show={isOpen}
      enter="transition-opacity duration-75"
      enterFrom="opacity-0"
      enterTo="opacity-100"
      leave="transition-opacity duration-150"
      leaveFrom="opacity-100"
      leaveTo="opacity-0"
    >
      I will fade in and out
    </Transition>
  )
}

In this example, the transitioning element will take 75ms to enter (that's the duration-75 class), and will transition the opacity property during that time (that's transition-opacity).

It will start completely transparent before entering (that's opacity-0 in the enterFrom phase), and fade in to completely opaque (opacity-100) when finished (that's the enterTo phase).

When the element is being removed (the leave phase), it will transition the opacity property, and spend 150ms doing it (transition-opacity duration-150).

It will start as completely opaque (the opacity-100 in the leaveFrom phase), and finish as completely transparent (the opacity-0 in the leaveTo phase).

All of these props are optional, and will default to just an empty string.

Co-ordinating multiple transitions

Sometimes you need to transition multiple elements with different animations but all based on the same state. For example, say the user clicks a button to open a sidebar that slides over the screen, and you also need to fade-in a background overlay at the same time.

You can do this by wrapping the related elements with a parent Transition component, and wrapping each child that needs its own transition styles with a Transition.Child component, which will automatically communicate with the parent Transition and inherit the parent's show state.

import { Transition } from '@tailwindui/react'

function Sidebar({ isOpen }) {
  return (
    <Transition show={isOpen}>
      {/* Shared parent */}
      <div>
        {/* Background overlay */}
        <Transition.Child
          enter="transition-opacity ease-linear duration-300"
          enterFrom="opacity-0"
          enterTo="opacity-100"
          leave="transition-opacity ease-linear duration-300"
          leaveFrom="opacity-100"
          leaveTo="opacity-0"
        >
          {/* ... */}
        </Transition.Child>

        {/* Sliding sidebar */}
        <Transition.Child
          enter="transition ease-in-out duration-300 transform"
          enterFrom="-translate-x-full"
          enterTo="translate-x-0"
          leave="transition ease-in-out duration-300 transform"
          leaveFrom="translate-x-0"
          leaveTo="-translate-x-full"
        >
          {/* ... */}
        </Transition.Child>
      </div>
    </Transition>
  )
}

The Transition.Child component has the exact same API as the Transition component, but with no show prop, since the show value is controlled by the parent.

Parent Transition components will always automatically wait for all children to finish transitioning before unmounting, so you don't need to manage any of that timing yourself.

Transitioning on initial mount

If you want an element to transition the very first time it's rendered, set the appear prop to true.

This is useful if you want something to transition in on initial page load, or when its parent is conditionally rendered.

import { Transition } from '@tailwindui/react'

function MyComponent({ isShowing }) {
  return (
    <Transition
      appear={true}
      show={isShowing}
      enter="transition-opacity duration-75"
      enterFrom="opacity-0"
      enterTo="opacity-100"
      leave="transition-opacity duration-150"
      leaveFrom="opacity-100"
      leaveTo="opacity-0"
    >
      {/* Your content goes here*/}
    </Transition>
  )
}