angular-recaptcha: Adjusting language based on the website's language update

My website offers three different languages that users can switch between. The language switch functionality is implemented on the client side using JavaScript (AngularJS).

I have integrated reCAPTCHA 2 into my website and now I need to update the language of the reCAPTCHA when a user switches the language of the website.

I am aware that I can set the language during initialization of reCAPTCHA with this code:

<script src="https://www.google.com/recaptcha/api.js?hl=cs"></script>

However, when I need to reload reCAPTCHA, the following code is used which does not provide an option for specifying a custom language:

grecaptcha.reset();

Is there a way to accomplish this without refreshing the page or re-initializing the reCAPTCHA widget with a different language?

EDIT

I am using angular-recaptcha to display the widget. This means:

  • I must call the vcRecaptchaApiLoaded callback after initializing the reCAPTCHA API
  • I cannot modify the code generated by the vcRecaptcha directive

This is the code responsible for rendering the reCAPTCHA widget:

<div
    vc-recaptcha
    key="'---- YOUR PUBLIC KEY GOES HERE ----'"
></div>

Here is the script to include the reCAPTCHA API in my website:

<script
  src="https://www.google.com/recaptcha/api.js?onload=vcRecaptchaApiLoaded&render=explicit&hl=cs"
  async defer
></script>
javascriptangularjstranslationrecaptcha

Answer №1

To change the language of the reCAPTCHA, you can clear the content of the div.g-recaptcha element and then reload the script programmatically.

You can use the following function to achieve this:

function switchRecaptchaLanguage(language) {
  document.querySelector('.g-recaptcha').innerHTML = '';

  var scriptTag = document.createElement('script');
  scriptTag.src = 'https://www.google.com/recaptcha/api.js?hl=' + language;
  scriptTag.async = true;
  scriptTag.defer = true;
  document.querySelector('head').appendChild(scriptTag);
}

Check out the example below for a demonstration: 

function switchRecaptchaLanguage(language) {
  document.querySelector('.g-recaptcha').innerHTML = '';
  
  var scriptTag = document.createElement('script');
  scriptTag.src = 'https://www.google.com/recaptcha/api.js?hl=' + language;
  scriptTag.async = true;
  scriptTag.defer = true;
  document.querySelector('head').appendChild(scriptTag);
}

var currentLang = 'en';

switchRecaptchaLanguage(currentLang);

document.querySelector('button').addEventListener('click', function() {
  currentLang = currentLang === 'en' ? 'pt-BR' : 'en';
  switchRecaptchaLanguage(currentLang);
});
<div>Insert other content here</div>
<div class="g-recaptcha" data-sitekey="your_site_key"></div>
<button>Change Language</button>

Answer №2

This question appears to be a repeat. Check out a potential solution here:

Changing ReCaptcha Language OnClick

In summary:

Currently, setting the reCAPTCHA language directly through JavaScript is not feasible. However, you can achieve this by using the 'hl' parameter during script loading as mentioned in your post.

If you want to dynamically change the language of your application without refreshing the page, consider removing the reCAPTCHA script link from the head section and loading it via a JavaScript call instead. This way, when a user clicks a button to change the language, you can reload reCAPTCHA with the new language by calling the load function again.

Answer №3

To include the language value, you can utilize the "lang" attribute in the directive.

<div vc-recaptcha key="publicKey" lang="es"></div>

Answer №4

While browsing through questions, I came across this one that was asked some time ago. In my opinion, the most effective way to tackle this is by utilizing the useLang method from the service within a $watch on the lang variable.

<div id="g-recaptcha" class="g-recaptcha" vc-recaptcha key="domainkey" lang="$root.lang" on-success="setResponse(response)"></div>

Additionally, if feasible, implement a $watch on the lang variable inside the directive:

scope.$watch('lang', function(){
        if(scope.widgetId!=null){
           vcRecaptcha.useLang(scope.widgetId,scope.lang);
        }
});

Answer №5

How to specify the language for ng-recaptcha during initialization:

 <re-captcha class="g-recaptcha"
             siteKey="asdfasdfasdfasdfasdasd"
             [(ngModel)]="myRecaptcha"
             name="captcha"
             #recaptcha></re-captcha>

app.module.ts

import {RecaptchaModule, RECAPTCHA_LANGUAGE} from 'ng-recaptcha';

const getDomainBaseUrl = location.toString();
export const language = baseUrl.toLocaleLowerCase();

...


 providers: [
    ...

    {
      provide: RECAPTCHA_LANGUAGE,
      useValue: language,
    },

  ],

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