import { Fragment, useEffect, useRef, useState, type FormEvent, type KeyboardEvent, type ReactElement } from "react"; /* Every piece below is written once: the function renders the live demo and the string next to it is that same source file, so the code you copy is the code you see. */ type Lang = "react" | "html"; type Piece = { id: string; name: string; blurb: string; group: string; Demo: () => ReactElement; react: string; html?: string; stage: string; }; const o1Demo = (() => { const LENGTH = 6; function OtpSingleField() { const [code, setCode] = useState(""); const [focused, setFocused] = useState(false); const inputRef = useRef(null); // WebOTP: where the browser supports it (Chrome on Android), fill the code from the SMS. // The text message must end with a line like: @yourdomain.com #123456 useEffect(() => { if (!("OTPCredential" in window)) return; const ac = new AbortController(); navigator.credentials .get({ otp: { transport: ["sms"] }, signal: ac.signal } as CredentialRequestOptions) .then((cred) => { const otp = (cred as unknown as { code?: string } | null)?.code; if (otp) setCode(otp.replace(/\D/g, "").slice(0, LENGTH)); }) .catch(() => {}); return () => ac.abort(); }, []); const clean = (v: string) => v.replace(/\D/g, "").slice(0, LENGTH); const active = focused ? Math.min(code.length, LENGTH - 1) : -1; return (

Verification code

We texted a 6-digit code to the number ending 0142.

setCode(clean(e.target.value))} onPaste={(e) => { e.preventDefault(); setCode(clean(e.clipboardData.getData("text"))); }} onFocus={(e) => { setFocused(true); const end = e.currentTarget.value.length; e.currentTarget.setSelectionRange(end, end); }} onBlur={() => setFocused(false)} className="absolute inset-0 z-10 h-full w-full cursor-text bg-transparent text-base text-transparent caret-transparent opacity-0 outline-none" />

Paste the whole code or let your phone fill it in.

); } return OtpSingleField; })(); const o1React = "import { useEffect, useRef, useState } from \"react\";\n\nconst LENGTH = 6;\n\nexport default function OtpSingleField() {\n const [code, setCode] = useState(\"\");\n const [focused, setFocused] = useState(false);\n const inputRef = useRef(null);\n\n // WebOTP: where the browser supports it (Chrome on Android), fill the code from the SMS.\n // The text message must end with a line like: @yourdomain.com #123456\n useEffect(() => {\n if (!(\"OTPCredential\" in window)) return;\n const ac = new AbortController();\n navigator.credentials\n .get({ otp: { transport: [\"sms\"] }, signal: ac.signal } as CredentialRequestOptions)\n .then((cred) => {\n const otp = (cred as unknown as { code?: string } | null)?.code;\n if (otp) setCode(otp.replace(/\\D/g, \"\").slice(0, LENGTH));\n })\n .catch(() => {});\n return () => ac.abort();\n }, []);\n\n const clean = (v: string) => v.replace(/\\D/g, \"\").slice(0, LENGTH);\n const active = focused ? Math.min(code.length, LENGTH - 1) : -1;\n\n return (\n

\n \n Verification code\n \n

\n We texted a 6-digit code to the number ending 0142.\n

\n setCode(clean(e.target.value))}\n onPaste={(e) => {\n e.preventDefault();\n setCode(clean(e.clipboardData.getData(\"text\")));\n }}\n onFocus={(e) => {\n setFocused(true);\n const end = e.currentTarget.value.length;\n e.currentTarget.setSelectionRange(end, end);\n }}\n onBlur={() => setFocused(false)}\n className=\"absolute inset-0 z-10 h-full w-full cursor-text bg-transparent text-base text-transparent caret-transparent opacity-0 outline-none\"\n />\n

\n {Array.from({ length: LENGTH }, (_, i) => (\n \n {code[i] ?? (i === active ? : \"\")}\n

\n ))}\n

Paste the whole code or let your phone fill it in.

\n \n );\n}\n"; const o1Html = `

Verification code

We texted a 6-digit code to the number ending 0142.

Paste the whole code or let your phone fill it in.

`; const o2Demo = (() => { const SIZE = 6; function OtpSplitFields() { const [digits, setDigits] = useState(Array(SIZE).fill("")); const refs = useRef<(HTMLInputElement | null)[]>([]); const focusAt = (i: number) => refs.current[Math.max(0, Math.min(SIZE - 1, i))]?.focus(); // Spreads pasted or autofilled text across the boxes from position `from`. function fill(from: number, text: string) { const chars = text.replace(/\D/g, "").split("").slice(0, SIZE - from); if (!chars.length) return; const next = [...digits]; chars.forEach((c, k) => (next[from + k] = c)); setDigits(next); focusAt(from + chars.length); } function onChange(i: number, value: string) { const v = value.replace(/\D/g, ""); if (v.length > 1) return fill(i, v); const next = [...digits]; next[i] = v; setDigits(next); if (v) focusAt(i + 1); } function onKeyDown(i: number, e: KeyboardEvent) { if (e.key === "Backspace" && !digits[i] && i > 0) { e.preventDefault(); const next = [...digits]; next[i - 1] = ""; setDigits(next); focusAt(i - 1); } else if (e.key === "ArrowLeft") { e.preventDefault(); focusAt(i - 1); } else if (e.key === "ArrowRight") { e.preventDefault(); focusAt(i + 1); } } return (

Sign-in code

Sent to dana@lumenfield.co. It expires in 10 minutes.

{digits.map((d, i) => ( {i === SIZE / 2 && } { refs.current[i] = el; }} value={d} aria-label={`Digit ${i + 1} of ${SIZE}`} type="text" inputMode="numeric" autoComplete={i === 0 ? "one-time-code" : "off"} maxLength={SIZE} onFocus={(e) => e.currentTarget.select()} onChange={(e) => onChange(i, e.target.value)} onKeyDown={(e) => onKeyDown(i, e)} onPaste={(e) => { e.preventDefault(); fill(i, e.clipboardData.getData("text")); }} className="h-12 w-full min-w-0 max-w-[3rem] flex-1 rounded-xl border border-slate-300 bg-slate-50 text-center font-mono text-lg font-semibold text-slate-900 outline-none transition-colors focus:border-slate-900 focus:bg-white focus:ring-2 focus:ring-slate-900/15" /> ))}

{digits.join("").length} of {SIZE} digits entered

); } return OtpSplitFields; })(); const o2React = "import { Fragment, useRef, useState, type KeyboardEvent } from \"react\";\n\nconst SIZE = 6;\n\nexport default function OtpSplitFields() {\n const [digits, setDigits] = useState(Array(SIZE).fill(\"\"));\n const refs = useRef<(HTMLInputElement | null)[]>([]);\n const focusAt = (i: number) => refs.current[Math.max(0, Math.min(SIZE - 1, i))]?.focus();\n\n // Spreads pasted or autofilled text across the boxes from position `from`.\n function fill(from: number, text: string) {\n const chars = text.replace(/\\D/g, \"\").split(\"\").slice(0, SIZE - from);\n if (!chars.length) return;\n const next = [...digits];\n chars.forEach((c, k) => (next[from + k] = c));\n setDigits(next);\n focusAt(from + chars.length);\n }\n\n function onChange(i: number, value: string) {\n const v = value.replace(/\\D/g, \"\");\n if (v.length > 1) return fill(i, v);\n const next = [...digits];\n next[i] = v;\n setDigits(next);\n if (v) focusAt(i + 1);\n }\n\n function onKeyDown(i: number, e: KeyboardEvent) {\n if (e.key === \"Backspace\" && !digits[i] && i > 0) {\n e.preventDefault();\n const next = [...digits];\n next[i - 1] = \"\";\n setDigits(next);\n focusAt(i - 1);\n } else if (e.key === \"ArrowLeft\") {\n e.preventDefault();\n focusAt(i - 1);\n } else if (e.key === \"ArrowRight\") {\n e.preventDefault();\n focusAt(i + 1);\n }\n }\n\n return (\n

\n Sign-in code\n

\n Sent to dana@lumenfield.co. It expires in 10 minutes.\n

\n {digits.map((d, i) => (\n \n {i === SIZE / 2 && }\n {\n refs.current[i] = el;\n }}\n value={d}\n aria-label={`Digit ${i + 1} of ${SIZE}`}\n type=\"text\"\n inputMode=\"numeric\"\n autoComplete={i === 0 ? \"one-time-code\" : \"off\"}\n maxLength={SIZE}\n onFocus={(e) => e.currentTarget.select()}\n onChange={(e) => onChange(i, e.target.value)}\n onKeyDown={(e) => onKeyDown(i, e)}\n onPaste={(e) => {\n e.preventDefault();\n fill(i, e.clipboardData.getData(\"text\"));\n }}\n className=\"h-12 w-full min-w-0 max-w-[3rem] flex-1 rounded-xl border border-slate-300 bg-slate-50 text-center font-mono text-lg font-semibold text-slate-900 outline-none transition-colors focus:border-slate-900 focus:bg-white focus:ring-2 focus:ring-slate-900/15\"\n />\n \n ))}\n

{digits.join(\"\").length} of {SIZE} digits entered

\n );\n}\n"; const o3Demo = (() => { const CODE_LENGTH = 6; const DEMO_CODE = "246810"; // in a real app the server checks the code const RESEND_AFTER = 30; const MISMATCH = "That code does not match. Check the newest text and try again."; function OtpWithResend() { const [code, setCode] = useState("246811"); const [error, setError] = useState(MISMATCH); const [seconds, setSeconds] = useState(RESEND_AFTER); const [status, setStatus] = useState(""); const [focused, setFocused] = useState(false); const inputRef = useRef(null); useEffect(() => { if (seconds <= 0) return; const id = setTimeout(() => setSeconds((s) => s - 1), 1000); return () => clearTimeout(id); }, [seconds]); function update(value: string) { setCode(value.replace(/\D/g, "").slice(0, CODE_LENGTH)); setError(""); setStatus(""); } function verify(e: FormEvent) { e.preventDefault(); if (code.length < CODE_LENGTH) setError(`Enter all ${CODE_LENGTH} digits.`); else if (code !== DEMO_CODE) setError(MISMATCH); else return setStatus("Code accepted. Signing you in."); inputRef.current?.focus(); } function resend() { setSeconds(RESEND_AFTER); update(""); setStatus("A new code is on its way."); inputRef.current?.focus(); } const active = focused ? Math.min(code.length, CODE_LENGTH - 1) : -1; return (

Enter your code

Demo code: 246810

update(e.target.value)} onPaste={(e) => { e.preventDefault(); update(e.clipboardData.getData("text")); }} onFocus={() => setFocused(true)} onBlur={() => setFocused(false)} className="absolute inset-0 z-10 h-full w-full cursor-text text-base text-transparent caret-transparent opacity-0 outline-none" />

{error && (

{error}

)}

{status}

); } return OtpWithResend; })(); const o3React = "import { useEffect, useRef, useState, type FormEvent } from \"react\";\n\nconst CODE_LENGTH = 6;\nconst DEMO_CODE = \"246810\"; // in a real app the server checks the code\nconst RESEND_AFTER = 30;\nconst MISMATCH = \"That code does not match. Check the newest text and try again.\";\n\nexport default function OtpWithResend() {\n const [code, setCode] = useState(\"246811\");\n const [error, setError] = useState(MISMATCH);\n const [seconds, setSeconds] = useState(RESEND_AFTER);\n const [status, setStatus] = useState(\"\");\n const [focused, setFocused] = useState(false);\n const inputRef = useRef(null);\n\n useEffect(() => {\n if (seconds <= 0) return;\n const id = setTimeout(() => setSeconds((s) => s - 1), 1000);\n return () => clearTimeout(id);\n }, [seconds]);\n\n function update(value: string) {\n setCode(value.replace(/\\D/g, \"\").slice(0, CODE_LENGTH));\n setError(\"\");\n setStatus(\"\");\n }\n\n function verify(e: FormEvent) {\n e.preventDefault();\n if (code.length < CODE_LENGTH) setError(`Enter all ${CODE_LENGTH} digits.`);\n else if (code !== DEMO_CODE) setError(MISMATCH);\n else return setStatus(\"Code accepted. Signing you in.\");\n inputRef.current?.focus();\n }\n\n function resend() {\n setSeconds(RESEND_AFTER);\n update(\"\");\n setStatus(\"A new code is on its way.\");\n inputRef.current?.focus();\n }\n\n const active = focused ? Math.min(code.length, CODE_LENGTH - 1) : -1;\n\n return (\n

\n \n Enter your code\n \n

\n Demo code: 246810\n

\n update(e.target.value)}\n onPaste={(e) => {\n e.preventDefault();\n update(e.clipboardData.getData(\"text\"));\n }}\n onFocus={() => setFocused(true)}\n onBlur={() => setFocused(false)}\n className=\"absolute inset-0 z-10 h-full w-full cursor-text text-base text-transparent caret-transparent opacity-0 outline-none\"\n />\n

\n {Array.from({ length: CODE_LENGTH }, (_, i) => (\n \n {code[i] ?? \"\"}\n

\n ))}\n

\n \n {error && (\n

\n {error}\n

\n )}\n \n Verify\n \n

\n \n {status}\n \n 0}\n className=\"h-10 rounded-md px-2 font-medium text-indigo-700 hover:bg-indigo-50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-600 disabled:cursor-not-allowed disabled:text-slate-500 disabled:hover:bg-transparent\"\n >\n {seconds > 0 ? `Resend in 0:${String(seconds).padStart(2, \"0\")}` : \"Resend code\"}\n \n

\n \n );\n}\n"; const o3Html = ` `; const o6Demo = (() => { const DIGITS = 6; const VALID = "135790"; // demo only: your server decides type Phase = "typing" | "checking" | "ok" | "wrong"; function OtpAutoSubmit() { const [code, setCode] = useState("1357"); const [phase, setPhase] = useState("typing"); const [focused, setFocused] = useState(false); const inputRef = useRef(null); // Submits on its own as soon as the last digit lands. useEffect(() => { if (code.length < DIGITS) return; setPhase("checking"); const id = setTimeout(() => setPhase(code === VALID ? "ok" : "wrong"), 900); return () => clearTimeout(id); }, [code]); function reset() { setCode(""); setPhase("typing"); inputRef.current?.focus(); } const active = focused && phase === "typing" ? Math.min(code.length, DIGITS - 1) : -1; const line = phase === "wrong" ? "bg-rose-400" : phase === "ok" ? "bg-emerald-400" : "bg-slate-600"; return (

Two-step check

Code from your authenticator app. Demo: 135790

{ setPhase("typing"); setCode(e.target.value.replace(/\D/g, "").slice(0, DIGITS)); }} onFocus={() => setFocused(true)} onBlur={() => setFocused(false)} className="absolute inset-0 z-10 h-full w-full cursor-text text-base text-transparent caret-transparent opacity-0 outline-none" />

{phase === "checking" && ( <>

{(phase === "ok" || phase === "wrong") && ( )}

); } return OtpAutoSubmit; })(); const o6React = "import { useEffect, useRef, useState } from \"react\";\n\nconst DIGITS = 6;\nconst VALID = \"135790\"; // demo only: your server decides\n\ntype Phase = \"typing\" | \"checking\" | \"ok\" | \"wrong\";\n\nexport default function OtpAutoSubmit() {\n const [code, setCode] = useState(\"1357\");\n const [phase, setPhase] = useState(\"typing\");\n const [focused, setFocused] = useState(false);\n const inputRef = useRef(null);\n\n // Submits on its own as soon as the last digit lands.\n useEffect(() => {\n if (code.length < DIGITS) return;\n setPhase(\"checking\");\n const id = setTimeout(() => setPhase(code === VALID ? \"ok\" : \"wrong\"), 900);\n return () => clearTimeout(id);\n }, [code]);\n\n function reset() {\n setCode(\"\");\n setPhase(\"typing\");\n inputRef.current?.focus();\n }\n\n const active = focused && phase === \"typing\" ? Math.min(code.length, DIGITS - 1) : -1;\n const line = phase === \"wrong\" ? \"bg-rose-400\" : phase === \"ok\" ? \"bg-emerald-400\" : \"bg-slate-600\";\n\n return (\n

\n \n Two-step check\n \n

\n Code from your authenticator app. Demo: 135790\n

\n {\n setPhase(\"typing\");\n setCode(e.target.value.replace(/\\D/g, \"\").slice(0, DIGITS));\n }}\n onFocus={() => setFocused(true)}\n onBlur={() => setFocused(false)}\n className=\"absolute inset-0 z-10 h-full w-full cursor-text text-base text-transparent caret-transparent opacity-0 outline-none\"\n />\n

\n {Array.from({ length: DIGITS }, (_, i) => (\n

\n {code[i] ?? \"\"}\n \n

\n ))}\n

\n {phase === \"checking\" && (\n <>\n \n Checking code\n \n )}\n {phase === \"ok\" && Verified. You are signed in.}\n {phase === \"wrong\" && Wrong code. Try again.}\n {phase === \"typing\" && Submits on the last digit}\n

\n {(phase === \"ok\" || phase === \"wrong\") && (\n \n Start over\n \n )}\n

\n );\n}\n"; const o5Demo = (() => { const PIN_LENGTH = 4; function OtpMaskedPin() { const [pin, setPin] = useState("39"); const [show, setShow] = useState(false); const [focused, setFocused] = useState(false); const active = focused ? Math.min(pin.length, PIN_LENGTH - 1) : -1; return (

Card PIN

Needed to unlock the card in the app.

setPin(e.target.value.replace(/\D/g, "").slice(0, PIN_LENGTH))} onFocus={() => setFocused(true)} onBlur={() => setFocused(false)} className="absolute inset-0 z-10 h-full w-full cursor-text text-base text-transparent caret-transparent opacity-0 outline-none" />

Forgot PIN?

); } return OtpMaskedPin; })(); const o5React = "import { useState } from \"react\";\n\nconst PIN_LENGTH = 4;\n\nexport default function OtpMaskedPin() {\n const [pin, setPin] = useState(\"39\");\n const [show, setShow] = useState(false);\n const [focused, setFocused] = useState(false);\n const active = focused ? Math.min(pin.length, PIN_LENGTH - 1) : -1;\n\n return (\n

\n \n Card PIN\n \n

\n Needed to unlock the card in the app.\n

\n setPin(e.target.value.replace(/\\D/g, \"\").slice(0, PIN_LENGTH))}\n onFocus={() => setFocused(true)}\n onBlur={() => setFocused(false)}\n className=\"absolute inset-0 z-10 h-full w-full cursor-text text-base text-transparent caret-transparent opacity-0 outline-none\"\n />\n

\n {Array.from({ length: PIN_LENGTH }, (_, i) => (\n \n {pin[i] ? show ? pin[i] : : \"\"}\n

\n ))}\n

\n setShow(!show)}\n className=\"h-10 rounded-full border border-slate-300 px-4 text-sm font-medium text-slate-800 hover:bg-slate-50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-amber-600\"\n >\n {show ? \"Hide PIN\" : \"Show PIN\"}\n \n \n Forgot PIN?\n \n

\n \n );\n}\n"; const o4Demo = (() => { const GROUP = 4; const TOTAL = 8; function OtpInviteCode() { const [value, setValue] = useState("KX7Q"); const [focused, setFocused] = useState(false); const clean = (v: string) => v.toUpperCase().replace(/[^A-Z0-9]/g, "").slice(0, TOTAL); const active = focused ? Math.min(value.length, TOTAL - 1) : -1; const box = (i: number) => (

{value[i] ?? "·"}

); return (

Team invite code

8 letters or numbers, from your invite email.

setValue(clean(e.target.value))} onFocus={() => setFocused(true)} onBlur={() => setFocused(false)} className="absolute inset-0 z-10 h-full w-full cursor-text text-base text-transparent caret-transparent opacity-0 outline-none" />

{value.length === TOTAL ? `Ready: ${value.slice(0, GROUP)}-${value.slice(GROUP)}` : `${TOTAL - value.length} characters to go`}

); } return OtpInviteCode; })(); const o4React = "import { useState } from \"react\";\n\nconst GROUP = 4;\nconst TOTAL = 8;\n\nexport default function OtpInviteCode() {\n const [value, setValue] = useState(\"KX7Q\");\n const [focused, setFocused] = useState(false);\n const clean = (v: string) => v.toUpperCase().replace(/[^A-Z0-9]/g, \"\").slice(0, TOTAL);\n const active = focused ? Math.min(value.length, TOTAL - 1) : -1;\n\n const box = (i: number) => (\n \n {value[i] ?? \"·\"}\n \n );\n\n return (\n

\n \n Team invite code\n \n

\n 8 letters or numbers, from your invite email.\n

\n setValue(clean(e.target.value))}\n onFocus={() => setFocused(true)}\n onBlur={() => setFocused(false)}\n className=\"absolute inset-0 z-10 h-full w-full cursor-text text-base text-transparent caret-transparent opacity-0 outline-none\"\n />\n

\n {Array.from({ length: GROUP }, (_, i) => box(i))}\n -\n {Array.from({ length: TOTAL - GROUP }, (_, i) => box(i + GROUP))}\n

\n {value.length === TOTAL ? `Ready: ${value.slice(0, GROUP)}-${value.slice(GROUP)}` : `${TOTAL - value.length} characters to go`}\n

\n );\n}\n"; const PIECES: Piece[] = [ { id: "o1", name: "Single field, six boxes", blurb: "One invisible input laid over six drawn boxes, so autofill, paste and WebOTP behave like any text field.", group: "numeric", Demo: o1Demo, react: o1React, html: o1Html, stage: "bg-slate-50 ring-1 ring-inset ring-slate-200/70" }, { id: "o2", name: "Six fields, split 3 and 3", blurb: "Separate boxes with auto-advance, Backspace to go back, arrow keys and paste spread.", group: "numeric", Demo: o2Demo, react: o2React, stage: "bg-slate-50 ring-1 ring-inset ring-slate-200/70" }, { id: "o3", name: "Verify with error and resend timer", blurb: "Announced error message, a 30 second countdown and a resend button.", group: "flows", Demo: o3Demo, react: o3React, html: o3Html, stage: "bg-slate-50 ring-1 ring-inset ring-slate-200/70" }, { id: "o6", name: "Auto-submit on the last digit", blurb: "Dark underline style that checks the code by itself and reports the result.", group: "flows", Demo: o6Demo, react: o6React, stage: "bg-slate-900" }, { id: "o5", name: "Masked 4-digit PIN", blurb: "Dots by default, with a pressed state button to show the digits.", group: "other", Demo: o5Demo, react: o5React, stage: "bg-slate-50 ring-1 ring-inset ring-slate-200/70" }, { id: "o4", name: "Letter and number invite code", blurb: "Eight characters in two groups, uppercased as you type, with spaces and dashes stripped.", group: "other", Demo: o4Demo, react: o4React, stage: "bg-slate-50 ring-1 ring-inset ring-slate-200/70" } ]; const GROUPS: { key: string; label: string }[] = [{"key":"numeric","label":"Numeric codes"},{"key":"flows","label":"Full flows"},{"key":"other","label":"PIN and invite codes"}]; const TEXT: { eyebrow: string; title: string; lead: string; refTitle: string; refNote: string } = {"eyebrow":"React · HTML, CSS and JS · no dependencies","title":"OTP inputs that work with SMS autofill","lead":"Six one-time code fields, from the single hidden input pattern to a full verify screen with an error and a resend timer. Each one accepts a pasted code, opens the number pad on phones and gives screen readers one clear label.","refTitle":"Attributes and APIs used here","refNote":"Checked against MDN (the autocomplete attribute, inputmode and the WebOTP API) and the HTML standard. Browser support notes describe MDN's compatibility data at the time of writing."}; const REF_HEAD: string[] = ["Attribute or API","What it does","Where it applies"]; const REF_ROWS: string[][] = [ [ "autocomplete=\"one-time-code\"", "Marks the field as a one-time code so the browser or password manager can offer a code it received, for example from a text message.", "Put it on the one input that receives the whole code. With split boxes, only on the first box." ], [ "inputmode=\"numeric\"", "Hints that the on-screen keyboard should show digits. It does not validate anything.", "Numeric codes and PINs. Leave it off for letter and number invite codes." ], [ "type=\"text\" (not number)", "Keeps leading zeros, avoids spin arrows and wheel changes, and allows paste of a code with spaces that you then strip.", "Every code field here." ], [ "maxlength", "Stops typing past the code length. Paste is handled in script so a longer clipboard string is trimmed, not rejected.", "Single field pattern." ], [ "pattern=\"[0-9]*\"", "Gives the browser a rule for constraint validation. Historically also used to get the number pad on older iOS.", "Optional when inputmode is present." ], [ "navigator.credentials.get({ otp })", "WebOTP API. Resolves with the code from an SMS whose last line is @your-domain #code. Needs a secure context.", "Chromium on Android. Not available in Safari or Firefox, so treat it as an extra on top of autocomplete." ], [ "aria-describedby + role=\"alert\"", "Links help and error text to the input, and announces a new error once without moving focus.", "Error and resend flow." ] ]; const COPY_ICON = "M9 9h10v10H9zM5 15V5h10"; const CHECK_ICON = "M5 12.5l4.5 4.5L19 7.5"; const CODE_ICON = "M8 7l-5 5 5 5M16 7l5 5-5 5"; export default function OtpInputCollection() { const [group, setGroup] = useState("all"); const [langs, setLangs] = useState>({}); const [open, setOpen] = useState(null); const [copied, setCopied] = useState(null); const [announce, setAnnounce] = useState(""); const timer = useRef | null>(null); useEffect( () => () => { if (timer.current) clearTimeout(timer.current); }, [] ); const shown = group === "all" ? PIECES : PIECES.filter((p) => p.group === group); const langOf = (p: Piece): Lang => (p.html ? langs[p.id] ?? "react" : "react"); const codeOf = (p: Piece) => (langOf(p) === "html" && p.html ? p.html : p.react); const langName = (l: Lang) => (l === "html" ? "HTML, CSS and JS" : "React and Tailwind"); async function copy(p: Piece) { let ok = false; try { await navigator.clipboard.writeText(codeOf(p)); ok = true; } catch { ok = false; } if (!ok) setOpen(p.id); setCopied(ok ? p.id : null); setAnnounce(ok ? `${p.name}: ${langName(langOf(p))} copied` : "Copy was blocked, so the code is shown under the demo for you to select"); if (timer.current) clearTimeout(timer.current); timer.current = setTimeout(() => setCopied(null), 1600); } const ring = "focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-600 focus-visible:ring-offset-2"; const chip = `inline-flex min-h-[40px] items-center gap-1.5 whitespace-nowrap rounded-full px-4 text-[13px] font-medium transition-colors ${ring}`; return (

{TEXT.eyebrow}

{TEXT.title}

{TEXT.lead}

{[{ key: "all", label: "All" }, ...GROUPS, { key: "ref", label: "Reference table" }].map((g) => { const on = group === g.key; const n = g.key === "ref" ? REF_ROWS.length : g.key === "all" ? PIECES.length : PIECES.filter((p) => p.group === g.key).length; return ( ); })}

{announce}

{group !== "ref" && (

{p.name}

{p.blurb}

{p.html && (
{(["react", "html"] as Lang[]).map((x) => ( ))}
)}
{isOpen && (
```
                    {codeOf(p)}
                  
```
)}

)} {group === "ref" && (

{TEXT.refTitle}

{TEXT.refNote}

{REF_HEAD.map((h) => ( ))} {REF_ROWS.map((r, i) => ( {r.map((c, j) => j === 0 ? ( ) : ( ) )} ))}

{h}
{c}	{c}

)}

); }