What is the best method for incorporating a delay within the upcoming subscribe block in Angular?

When subscribing to a service method, I have a sequence of actions that need to occur: displaying a toaster, resetting a form, and navigating to another component. However, I want to introduce a delay before the navigation so users can see the toaster message indicating the upcoming page change.

this.auth.signup(body).subscribe({
  next: () => {
    this.toastr.success("Redirecting you to login.", 'Register successful!');
    this.signUpForm.reset();
    
    // Need to implement a delay before navigating
    
    this.router.navigate(['login']);
  },
  error: (err) => { this.toastr.error(err?.error.message, 'Oops!'); }
  });

I've attempted various techniques found online, such as using 'rxjs/operators' for delays or implementing promises with pipes, but none have proven effective in achieving the desired result thus far.

Answer №1

An easy solution is to use the traditional setTimeout() function and include your this.router.navigate(['login']); inside the callback function. Take a look at this example with a delay of 2 seconds:

this.auth.signup(body).subscribe({
  next: () => {
    this.toastr.success("Redirecting you to login.", 'Register successful!');
    this.signUpForm.reset();
    
    // Adding a delay before navigation
    setTimeout(() => this.router.navigate(['login']), 2000)    
  },
  error: (err) => { this.toastr.error(err?.error.message, 'Oops!'); }
});

I created a simplified version (with console outputs) of your code in this StackBlitz. Click the button and check the console outputs - it should achieve what you need.

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