Angular / Typescript - Could not update outside variable in the subscribe function

below is my code, I just want to query the backend if email already registered or not, however, no matter what email I pass to the verifyEmail function, the "registered" variable always false, how can I update the registered variable according to the backend response ? Thanks

export class MyClass {       registered: boolean = false;     message: string = ''       verifyEmail(email) {           this.registered= false                    let verifyEmailUrl = "/backend/GetUserByEmail";          this.http.post(verifyEmailUrl, {              email: email          }).subscribe(              (data) => {                  if (data["user"]) { // can find a user                      this.message = 'This email has already been registered'                      this.registered= true                  }              });  }    

https://stackoverflow.com/questions/66082798/angular-typescript-could-not-update-outside-variable-in-the-subscribe-functi February 07, 2021 at 06:51AM