http get error handling angular code example

Example 1: interceptor error handling angular 9

import { HttpEvent, HttpInterceptor, HttpHandler, HttpRequest, HttpErrorResponse } from '@angular/common/http';
import { Observable, throwError } from 'rxjs';
import { catchError } from 'rxjs/operators';
export class HttpErrorInterceptor implements HttpInterceptor {
  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    return next.handle(request)
      .pipe(
        catchError((error: HttpErrorResponse) => {
          let errorMsg = '';
          if (error.error instanceof ErrorEvent) {
            console.log('this is client side error');
            errorMsg = `Error: ${error.error.message}`;
          }
          else {
            console.log('this is server side error');
            errorMsg = `Error Code: ${error.status},  Message: ${error.message}`;
          }
          console.log(errorMsg);
          return throwError(errorMsg);
        })
      )
  }
}

Example 2: angular http error handling

// src/app/services/interceptor.service.ts
    import { Injectable } from '@angular/core';
    import {
    HttpInterceptor, HttpRequest,
    HttpHandler, HttpEvent, HttpErrorResponse
    } from '@angular/common/http';
    import { Observable, throwError } from 'rxjs';
    import { catchError } from 'rxjs/operators';
    @Injectable({
    providedIn: 'root'
    })
    export class InterceptorService implements HttpInterceptor{
     constructor() { }
     handleError(error: HttpErrorResponse){
      console.log("lalalalalalalala");
      return throwError(error);
     }
    intercept(req: HttpRequest<any>, next: HttpHandler):
    Observable<HttpEvent<any>>{
     return next.handle(req)
     .pipe(
      catchError(this.handleError)
     )
     };
    }