add service data

src/app/services/data.service.ts

@@ -5,5 +5,16 @@ import { Injectable } from '@angular/core';
 })
 export class DataService {
 
+
+  private data = {}
   constructor() { }
+
+  set(name: string, value: any) {
+    this.data[name] = value
+  }
+
+  get (name: string) {
+    return this.data[name]
+  }
+  
 }