When you utilize the `clear()` method from reCaptcha verifier, it effectively removes the reCAPTCHA widget from the page and terminates the current instance. This action not only clears the captcha instance but also removes the associated DOM element. Before, upon clearing the reCAPTCHA, the DOM element would be removed, rendering re-initialization impossible. Additionally, if the captcha was previously initialized on an element, reinitialization was not feasible until clearing it.
signup.component.html :BEFORE
<div id="captcha-element"></div>
signup.component.html :AFTER
<div #captchaContainer>
<div id="captcha-element"></div>
</div>
signup.component.ts
declare var grecaptcha: any;
@Component({
selector: 'auth-signup',
templateUrl: './signup.component.html',
styleUrls: ['./signup.component.scss'],
})
export class LoginComponent implements OnDestroy {
otpIdentifier: string | null = null;
recaptchaVerifier: firebase.auth.RecaptchaVerifier | null = null;
recaptchaWidgetId: number | null = null;
@ViewChild('captchaContainer') captchaContainer!: ElementRef;
constructor() {}
async sendOtp() {
try {
if (!this.phoneNumber) {
return;
}
if (this.recaptchaVerifier && this.isSubmitting && !this.otpSent) {
//send otp here
}
} catch (error: any) {
console.error(error);
}
}
initiateRecaptchaContainer() {
this.recaptchaVerifier = new firebase.auth.RecaptchaVerifier('captcha-element', {
'size': 'invisible',
'expired-callback': () => {
grecaptcha.reset(this.recaptchaWidgetId);
},
});
this.recaptchaVerifier?.render().then((id) => {
this.recaptchaWidgetId = id;
});
}
async resendOtp() {
this.clearRecaptcha();
this.initiateRecaptchaContainer();
if (this.recaptchaVerifier) {
//send otp here
}
}
clearRecaptcha() {
this.recaptchaVerifier?.clear();
this.captchaContainer.nativeElement.innerHTML = `<div id="captcha-element"></div>`;
}
returnAndReinitializeCaptcha() {
this.clearRecaptcha();
this.initiateRecaptchaContainer();
}
ngOnDestroy(): void {
}
ngAfterViewInit(): void {
this.initiateRecaptchaContainer();
}
}
Below change we made in component
//to clear the captcha and adding the element to dom again so that we can reinitialize the captcha.
@ViewChild('captchaContainer') captchaContainer!: ElementRef;
clearRecaptcha() {
this.recaptchaVerifier?.clear();
this.captchaContainer.nativeElement.innerHTML = `<div id="captcha-element"></div>`;
}
This approach should address your issue effectively across various applications where similar challenges arise.