Solid hCaptcha Component Library

This is a port of @hcaptcha/react-hcaptcha for Solid.

hCaptcha is a drop-replacement for reCAPTCHA that protects user privacy, rewards websites, and helps companies get their data labeled.

Sign up at hCaptcha to get your sitekey today. You need a sitekey to use this library.

1. Installation
2. Implementation
3. References
4. Debugging

Installation

You can install this library via your favorite package manager.

# npm
npm install solid-hcaptcha --save

# Yarn
yarn add solid-hcaptcha

# pnpm
pnpm add solid-hcaptcha

Implementation

You can see multiple demos on the example website.

Basic Usage

import type { HCaptchaExecuteResponse } from "solid-hcaptcha";
import HCaptcha from "solid-hcaptcha";

const App: Component = () => {
  const handleVerify = (token: string, eKey: string) => {
    console.log(token, eKey);
  };

  return (
    <HCaptcha
      sitekey="10000000-ffff-ffff-ffff-000000000001"
      onVerify={token => console.log(token)}
    />
  );
};

export default App;

Programmatic Usage

import type {
  HCaptchaFunctions,
  HCaptchaExecuteResponse
} from "solid-hcaptcha";

import HCaptcha from "solid-hcaptcha";
import { createSignal } from "solid-js";

const App: Component = () => {
  const [captchaResponse, setCaptchaResponse] = createSignal<HCaptchaExecuteResponse | null>(null);
  let hcaptcha: HCaptchaFunctions | undefined;

  const submitCaptcha = async () => {
    if (!hcaptcha) return; // Check if the widget has loaded.

    // Execute the captcha and get the response.
    const response = await hcaptcha.execute();

    setCaptchaResponse(response);
    console.log("stored response", response);
  };

  return (
    <div>
      <HCaptcha
        sitekey="10000000-ffff-ffff-ffff-000000000001"
        onLoad={hcaptcha_instance => (hcaptcha = hcaptcha_instance)}
        size="invisible"
      />

      <button onClick={submitCaptcha}>
        Open captcha
      </button>
    </div>
  );
};

export default App;

References

Props

Name	Values/Type	Required	Default	Description
sitekey	string	Yes	-	This is your sitekey, this allows you to load captcha. If you need a sitekey, please visit hCaptcha, and sign up to get your sitekey.
size	"normal" | "compact" | "invisible"	No	"normal"	This specifies the "size" of the component. hCaptcha allows you to decide how big the component will appear on render, this always defaults to normal.
theme	"light" | "dark"	No	"light"	hCaptcha supports both a light and dark theme. If no theme is inherently set, the captcha will always default to light.
tabindex	number	No	0	Set the tabindex of the widget and popup. When appropriate, this can make navigation of your site more intuitive.
id	string	No	-	Set an ID to the hCaptcha widget. Make sure each hCaptcha component generated on a single page has its own unique ID when using this prop.
config	HCaptchaConfig	No	{}	Advanced configuration for the hCaptcha component.

Advanced Configuration (HCaptchaConfig)

All the parameters are optional.

Name	Values/Type	Default	Description
recaptchacompat	boolean	true	Disable drop-in replacement for reCAPTCHA with false to prevent hCaptcha from injecting into window.grecaptcha.
hl	string (ISO 639-2 code)	auto	hCaptcha auto-detects language via the user's browser. This overrides that to set a default UI language. See language codes.
apihost	string	-	See enterprise docs.
assethost	string	-	See enterprise docs.
endpoint	string	-	See enterprise docs.
host	string	-	See enterprise docs.
imghost	string	-	See enterprise docs.
reportapi	string	-	See enterprise docs.
sentry	string	-	See enterprise docs.
custom	boolean	-	See enterprise docs.

Events Props

Event	Params	Description
onError	error: HCaptchaError	When an error occurs. Component will reset immediately after an error.
onVerify	token: string, eKey: string	When challenge is completed. The response token and an eKey (session ID) are passed along.
onExpire	-	When the current token expires.
onLoad	hcaptcha: HCaptchaFunctions	When the hCaptcha API loads. The hCaptcha instance is passed along. You can store them to use, later, its methods.
onOpen	-	When the user display of a challenge starts.
onClose	-	When the user dismisses a challenge.
onChallengeExpired	-	When the user display of a challenge times out with no answer.

Methods from hCaptcha instance (HCaptchaFunctions)

Method	Description
execute()	Programmatically trigger a challenge request. Additionally, this method is run asynchronously and returns a promise with the token and eKey when the challenge is completed.
executeSync()	Programmatically trigger a challenge request but doesn't return the captcha response.
getRespKey()	Get the current challenge reference ID.
getResponse()	Get the current challenge response token from completed challenge.
renderCaptcha(onReady?: () => unknown)	Manually render the hCaptcha widget.
removeCaptcha(callback?: () => unknown)	Manually remove the hCaptcha widget from the DOM.
resetCaptcha()	Reset the current challenge.
setData()	See enterprise docs.

Note
Make sure to reset the hCaptcha state when you submit your form by calling the method .resetCaptcha on your hCaptcha Solid Component! Passcodes are one-time use, so if your user submits the same passcode twice then it will be rejected by the server the second time.

Please note that "invisible" simply means that no hCaptcha button will be rendered. Whether a challenge shows up will depend on the sitekey difficulty level. Note to hCaptcha Enterprise (BotStop) users: select "Passive" or "99.9% Passive" modes to get this No-CAPTCHA behavior.

Debugging

Make sure you don't double-import the api.js script

Importing the JS SDK twice can cause unpredictable behavior, so don't do a direct import separately if you are using solid-hcaptcha.

Make sure you are using recaptchacompat: false if you have the reCAPTCHA JS loaded on the same page

parallel (they recommend only running hCaptcha) then please disable their compatibility mode.