manojsingh047

// promise function 1
function p1(a) {
  console.log('p1', a);
  return new Promise((resolve, reject) => {
    resolve(a * 1);
  });
}

// promise function 2
function p2(a) {

manojsingh047

<form action="http://bank.com/transfer.do" method="POST">
  <input type="hidden" name="acct" value="ATTACKER_ACCOUNT"/> 
  <input type="hidden" name="amount" value="100000"/>
  <input type="submit" value="View my pictures"/>
</form>

manojsingh047

import { ErrorHandler, Injectable} from '@angular/core';
import { HttpErrorResponse } from '@angular/common/http';
import { CustomError } from './custom-error';
@Injectable()
export class GlobalErrorHandler implements ErrorHandler {
  constructor() { }
  handleError(error) {
    if(error instanceof HttpErrorResponse){
      //write your handler for network errors, may be send to error loggers
    }

manojsingh047

export class CustomError extends Error {
  constructor(m: string) {
      super(m);
      // Set the prototype explicitly.
      Object.setPrototypeOf(this, CustomError.prototype);
  }
}

manojsingh047

import { BrowserModule } from '@angular/platform-browser';
import { NgModule, ErrorHandler } from '@angular/core';

import { AppComponent } from './app.component';
import { GlobalErrorHandler } from './error-handler.service';

@NgModule({
  declarations: [
    AppComponent
  ],

manojsingh047

import { ErrorHandler, Injectable} from '@angular/core';
@Injectable()
export class GlobalErrorHandler implements ErrorHandler {
  constructor() { }
  handleError(error) {
     console.error(error);
  }  
}