OTP Input for React 🔐 by @guilhermerodz
CleanShot.2024-02-19.at.14.38.54-converted.mp4
npm install input-otpThen import the component.
+'use client'
+import { OTPInput } from 'input-otp'
function MyForm() {
return <form>
+ <OTPInput maxLength={6} render={({slots}) => (...)} />
</form>
}The example below uses tailwindcss @shadcn/ui tailwind-merge clsx:
'use client'
import { OTPInput, SlotProps } from 'input-otp'
<OTPInput
maxLength={6}
containerClassName="group flex items-center has-[:disabled]:opacity-30"
render={({ slots }) => (
<>
<div className="flex">
{slots.slice(0, 3).map((slot, idx) => (
<Slot key={idx} {...slot} />
))}
</div>
<FakeDash />
<div className="flex">
{slots.slice(3).map((slot, idx) => (
<Slot key={idx} {...slot} />
))}
</div>
</>
)}
/>
// Feel free to copy. Uses @shadcn/ui tailwind colors.
function Slot(props: SlotProps) {
return (
<div
className={cn(
'relative w-10 h-14 text-[2rem]',
'flex items-center justify-center',
'transition-all duration-300',
'border-border border-y border-r first:border-l first:rounded-l-md last:rounded-r-md',
'group-hover:border-accent-foreground/20 group-focus-within:border-accent-foreground/20',
'outline outline-0 outline-accent-foreground/20',
{ 'outline-4 outline-accent-foreground': props.isActive },
)}
>
<div className="group-has-[input[data-input-otp-placeholder-shown]]:opacity-20">
{props.char ?? props.placeholderChar}
</div>
{props.hasFakeCaret && <FakeCaret />}
</div>
)
}
// You can emulate a fake textbox caret!
function FakeCaret() {
return (
<div className="absolute pointer-events-none inset-0 flex items-center justify-center animate-caret-blink">
<div className="w-px h-8 bg-white" />
</div>
)
}
// Inspired by Stripe's MFA input.
function FakeDash() {
return (
<div className="flex w-10 justify-center items-center">
<div className="w-3 h-1 rounded-full bg-border" />
</div>
)
}
// tailwind.config.ts for the blinking caret animation.
const config = {
theme: {
extend: {
keyframes: {
'caret-blink': {
'0%,70%,100%': { opacity: '1' },
'20%,50%': { opacity: '0' },
},
},
animation: {
'caret-blink': 'caret-blink 1.2s ease-out infinite',
},
},
},
}
// Small utility to merge class names.
import { clsx } from 'clsx'
import { twMerge } from 'tailwind-merge'
import type { ClassValue } from 'clsx'
export function cn(...inputs: ClassValue[]) {
return twMerge(clsx(inputs))
}There's currently no native OTP/2FA/MFA input in HTML, which means people are either going with 1. a simple input design or 2. custom designs like this one.
This library works by rendering an invisible input as a sibling of the slots, contained by a relatively positioned parent (the container root called OTPInput).
This is the most complete OTP input on the web. It's fully featured
Supports iOS + Android copy-paste-cut
twittervid.com_guilherme_rodz_36bebe.mp4
Automatic OTP code retrieval from transport (e.g SMS)
By default, this input uses autocomplete='one-time-code' and it works as it's a single input.
twittervid.com_guilherme_rodz_6fafe6.mp4
Supports screen readers (a11y)
Stripe was my first inspiration to build this library.
Take a look at Stripe's input. The screen reader does not behave like it normally should on a normal single input. That's because Stripe's solution is to render a 1-digit input with "clone-divs" rendering a single char per div.
twittervid.com_guilherme_rodz_aeb513.mp4
So we're rendering a single input with invisible/transparent colors instead. The screen reader now gets to read it, but there is no appearance. Feel free to build whatever UI you want:
twittervid.com_guilherme_rodz_dfce3c.mp4
Supports all keybindings
Should be able to support all keybindings of a common text input as it's an input.
twittervid.com_guilherme_rodz_640d87.mp4
Automatically optimizes for password managers
For password managers such as LastPass, 1Password, Dashlane or Bitwarden, input-otp will automatically detect them in the page and increase input width by ~40px to trick the password manager's browser extension and prevent the badge from rendering to the last/right slot of the input.
- This feature is optional and it's enabled by default. You can disable this optimization by adding
pushPasswordManagerStrategy="none". - This feature does not cause visible layout shift.
CleanShot.2024-03-11.at.05.11.20.mp4
The root container. Define settings for the input via props. Then, use the render prop to create the slots.
type OTPInputProps = {
// The number of slots
maxLength: number
// Render function creating the slots
render: (props: RenderProps) => React.ReactElement
// PS: Render prop is mandatory, except in cases
// you'd like to consume the original Context API.
// (search for Context in this docs)
// The class name for the root container
containerClassName?: string
// Value state controlling the input
value?: string
// Setter for the controlled value (or callback for uncontrolled value)
onChange?: (newValue: string) => unknown
// Callback when the input is complete
onComplete?: (...args: any[]) => unknown
// Where is the text located within the input
// Affects click-holding or long-press behavior
// Default: 'left'
textAlign?: 'left' | 'center' | 'right'
// Virtual keyboard appearance on mobile
// Default: 'numeric'
inputMode?: 'numeric' | 'text' | 'decimal' | 'tel' | 'search' | 'email' | 'url'
// Pro tip: input-otp export some patterns by default such as REGEXP_ONLY_DIGITS which you can import from the same library path
// Example: import { REGEXP_ONLY_DIGITS } from 'input-otp';
// Then use it as: <OTPInput pattern={REGEXP_ONLY_DIGITS}>
pattern?: string
// While rendering the input slot, you can access both the char and the placeholder, if there's one and it's active.
placeholder?: string
// Transfomer function that allows pasting, for example, "XXX-XXX" even though the input's regex/pattern doesn't allow hyphen and its max length is 6.
// Example: (pasted) => pasted.replaceAll('-', '')
pasteTransformer?: (pastedText: string) => string
// Enabled by default, it's an optional
// strategy for detecting Password Managers
// in the page and then shifting their
// badges to the right side, outside the input.
pushPasswordManagerStrategy?:
| 'increase-width'
| 'none'
// Enabled by default, it's an optional
// fallback for pages without JS.
// This is a CSS string. Write your own
// rules that will be applied as soon as
// <noscript> is parsed for no-js pages.
// Use `null` to disable any no-js fallback (not recommended).
// Default: `
// [data-input-otp] {
// --nojs-bg: white !important;
// --nojs-fg: black !important;
//
// background-color: var(--nojs-bg) !important;
// color: var(--nojs-fg) !important;
// caret-color: var(--nojs-fg) !important;
// letter-spacing: .25em !important;
// text-align: center !important;
// border: 1px solid var(--nojs-fg) !important;
// border-radius: 4px !important;
// width: 100% !important;
// }
// @media (prefers-color-scheme: dark) {
// [data-input-otp] {
// --nojs-bg: black !important;
// --nojs-fg: white !important;
// }
// }`
noScriptCSSFallback?: string | null
}Automatic form submission on OTP completion
export default function Page() {
const formRef = useRef<HTMLFormElement>(null)
const buttonRef = useRef<HTMLButtonElement>(null)
return (
<form ref={formRef}>
<OTPInput
// ... automatically submit the form
onComplete={() => formRef.current?.submit()}
// ... or focus the button like as you wish
onComplete={() => buttonRef.current?.focus()}
/>
<button ref={buttonRef}>Submit</button>
</form>
)
}Automatically focus the input when the page loads
export default function Page() {
return (
<form ref={formRef}>
<OTPInput
autoFocus
// Pro tip: accepts all common HTML input props...
/>
</form>
)
}Usage with react-hook-form
Just use it as a regular text input:const { register, handleSubmit } = useForm();
// Then register it like a text input
<InputOTP {...register("otp")} />You can also use react-hook-form's Controller if needed:
const { control } = useForm();
// Then control it like a text input
<Controller
name="customOTP"
control={control}
defaultValue=""
render={({ field }) => (
<OTPInput
{...field}
label="Custom OTP"
/>
)}
/>[Workaround] If you want to block specific password manager/badges:
By default, input-otp handles password managers for you.
The password manager badges should be automatically shifted to the right side.
However, if you still want to block password managers, please disable the pushPasswordManagerStrategy and then manually block each PWM.
<OTPInput
// First, disable library's built-in strategy
// for shifting badges automatically
- pushPasswordManagerStrategy="increase-width"
+ pushPasswordManagerStrategy="none"
// Then, manually add specifics attributes
// your password manager docs
// Example: block LastPass
+ data-lpignore="true"
// Example: block 1Password
+ data-1p-ignore="true"
/>[Setting] If you want to customize the `noscript` CSS fallback
By default, input-otp handles cases where JS is not in the page by applying custom CSS styles.
If you do not like the fallback design and want to apply it to your own, just pass a prop:
// This is the default CSS fallback.
// Feel free to change it entirely and apply to your design system.
const NOSCRIPT_CSS_FALLBACK = `
[data-input-otp] {
--nojs-bg: white !important;
--nojs-fg: black !important;
background-color: var(--nojs-bg) !important;
color: var(--nojs-fg) !important;
caret-color: var(--nojs-fg) !important;
letter-spacing: .25em !important;
text-align: center !important;
border: 1px solid var(--nojs-fg) !important;
border-radius: 4px !important;
width: 100% !important;
}
@media (prefers-color-scheme: dark) {
[data-input-otp] {
--nojs-bg: black !important;
--nojs-fg: white !important;
}
}`
<OTPInput
// Pass your own custom styles for when JS is disabled
+ noScriptCSSFallback={NOSCRIPT_CSS_FALLBACK}
/>[Workaround] If you're experiencing an unwanted border on input focus:
<OTPInput
// Add class to the input itself
+ className="focus-visible:ring-0"
// Not the container
containerClassName="..."
/>[Not Recommended] If you want to centralize input text/selection, use the `textAlign` prop:
<OTPInput
// customizable but not recommended
+ textAlign="center"
/>NOTE: this also affects the selected caret position after a touch/click.
textAlign="left"
textAlign="center"
textAlign="right"
If you want to use Context props:
+import { OTPInputContext } from 'input-otp'
function MyForm() {
return (
<OTPInput
- // First remove the `render` prop
- render={...}
>
<OTPInputWrapper />
</OTPInput>
)
}
+function OTPInputWrapper() {
+ const inputContext = React.useContext(OTPInputContext)
+ return (
+ <>
+ {inputContext.slots.map((slot, idx) => (
+ <Slot key={idx} {...slot} />
+ ))}
+ </>
+ )
+}NOTE: this also affects the selected caret position after a touch/click.
textAlign="left"
textAlign="center"
textAlign="right"
[DX] Add Tailwind autocomplete for `containerClassname` attribute in VS Code.
Add the following setting to your .vscode/settings.json:
{
"tailwindCSS.classAttributes": [
"class",
"className",
+ ".*ClassName"
]
}