save

src/app/services/functions/initials.service.ts

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+import { Injectable } from '@angular/core';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class InitialsService {
+
+  constructor() { }
+
+  getInitials(name:string){
+    let names = name.split(' '),
+    initials = names[0].substring(0, 1).toUpperCase();
+    if (names.length > 1) {
+      initials += names[names.length - 1].substring(0, 1).toUpperCase();
+    }
+    return initials;
+    }
+}