Across tab localstorage

    import { Injectable, OnDestroy } from '@angular/core';
    import { Subject } from 'rxjs/Subject';
    import { share } from 'rxjs/operators';
    
    @Injectable()
    export class StorageService implements OnDestroy {
      private onSubject = new Subject<{ key: string, value: any }>();
      public changes = this.onSubject.asObservable().pipe(share());
    
      constructor() {
        this.start();
      }
    
      ngOnDestroy() {
        this.stop();
      }
    
      public getStorage() {
        let s = [];
        for (let i = 0; i < localStorage.length; i++) {
          s.push({
            key: localStorage.key(i),
            value: JSON.parse(localStorage.getItem(localStorage.key(i)))
          });
        }
        return s;
      }
    
      public store(key: string, data: any): void {
        localStorage.setItem(key, JSON.stringify(data));
        this.onSubject.next({ key: key, value: data})
      }
    
      public clear(key) {
        localStorage.removeItem(key);
        this.onSubject.next({ key: key, value: null });
      }
    
    
      private start(): void {
        window.addEventListener("storage", this.storageEventListener.bind(this));
      }
    
      private storageEventListener(event: StorageEvent) {
        if (event.storageArea == localStorage) {
          let v;
          try { v = JSON.parse(event.newValue); }
          catch (e) { v = event.newValue; }
          this.onSubject.next({ key: event.key, value: v });
        }
      }
    
      private stop(): void {
        window.removeEventListener("storage", this.storageEventListener.bind(this));
        this.onSubject.complete();
      }
    }

Source: stackoverflow.com

Similar codes

0 vote244 views2 answers
Typescript one of the array items
TypeScript
-1 vote274 views1 answer
What is lexicographically smallest string
TypeScript
0 vote271 views1 answer
How to check that tuple contains unique elements
TypeScript
0 vote242 views1 answer
Ips in range typescript
TypeScript
49 votes301 views5 answers
How to remove bullets from ul
TypeScript
1 vote259 views1 answer
Vue save page elements to pdf
TypeScript
0 vote279 views1 answer
Defects and Defect Density of quality software
TypeScript
0 vote252 views2 answers
Isnull or empty typescript
TypeScript
0 vote264 views1 answer
Could not read Username for 'https://github.com': terminal prompts disabled
TypeScript
0 vote246 views2 answers
Does word start with vowel typescript
TypeScript