inputotp

name	InputOTP
description	Build headless, configurable-length OTP, PIN, and verification-code inputs with lynx-ui InputOTP.

lynx-ui InputOTP

Requirements

InputOTP requires Lynx SDK 4.0 or newer.

Core capabilities

InputOTP owns value and keyboard behavior through one hidden native input. Consumers compose the visible interface with InputOTPSlot. It supports:

• A configurable positive number of numeric, alphabetic, or alphanumeric ASCII characters.
• Controlled and uncontrolled values.
• Completion, focus, and blur callbacks.
• Imperative focus, blur, set, clear, and read methods.
• Consumer-defined slot layout, separators, masking, caret, themes, and RTL.
• Typed ui-* state variants and render props without visible package CSS.

Minimal example

import { useState } from '@lynx-js/react'
import { InputOTP, InputOTPSlot } from '@lynx-js/lynx-ui'

function VerificationCode() {
  const [code, setCode] = useState('')

  return (
    <InputOTP
      autoFocus
      length={6}
      value={code}
      onChange={setCode}
      onComplete={(completeCode) => {
        console.log('verify', completeCode)
      }}
    >
      {Array.from(
        { length: 6 },
        (_, index) => (
          <InputOTPSlot
            key={index}
            index={index}
            className='otp-slot'
          />
        ),
      )}
    </InputOTP>
  )
}

Usage guidance

• Render one InputOTPSlot for every configured index.
• Pass a positive integer to length; invalid values fall back to six slots.
• Use inputType="numeric", "alphabetic", or "alphanumeric" to choose both the native keyboard and accepted ASCII characters.
• Prefer controlled mode when a parent submits, validates, or resets the value.
• Use InputOTPRef.clear() to reset an uncontrolled field. In controlled mode, update the value prop from onChange.
• Treat onComplete as a readiness signal and keep network submission in the parent.
• Implement masking with the InputOTPSlot render function. The original value remains available to InputOTP callbacks.
• Insert separator nodes directly between InputOTPSlot children.
• Use className and style for base slot styling. On the root, target ui-focused, ui-complete, ui-disabled, and ui-invalid. On slots, target ui-focused, ui-filled, ui-complete, ui-disabled, and ui-invalid. Use the slot render function when custom character or caret nodes need their own presentation.
• Apply direction: rtl to the outer container and let descendants inherit it.

Masked slot example

<InputOTPSlot index={0}>
  {({ filled }) =>
    filled ? <text>•</text> : null}
</InputOTPSlot>

Component roles

• InputOTP: owns the native input, normalized value, callbacks, and context.
• InputOTPSlot: consumes a zero-based character index and renders either the default character/caret nodes or custom render-prop content.