import { Component, OnInit } from '@angular/core'; @Component({ selector: 'app-root', templateUrl: './app.component.html', styleUrls: ['./app.component.css'] }) export class AppComponent implements OnInit { private _userid = 'user5649231'; private _backendserveraddress = 'http://localhost:8080'; title = 'app'; ngOnInit() { localStorage.setItem('user_id', this._userid); console.log(localStorage.getItem('user_id'), this._userid); localStorage.setItem('mining_backend_address', this._backendserveraddress); console.log(localStorage.getItem('mining_backend_address'), this._backendserveraddress); } }