src/app/employee/manage-employee/manage-employee.component.ts

import { Component, OnInit } from '@angular/core';
import {MatTableDataSource} from '@angular/material';


@Component({
  selector: 'app-manage-employee',
  templateUrl: './manage-employee.component.html',
  styleUrls: ['./manage-employee.component.scss']
})
export class ManageEmployeeComponent implements OnInit {
  displayedColumns = ['id','firstName','lastName'];
  dataSource = new MatTableDataSource(ELEMENT_DATA);

  applyFilter(filterValue: string) {
    filterValue = filterValue.trim(); // Remove whitespace
    filterValue = filterValue.toLowerCase(); // MatTableDataSource defaults to lowercase matches
    this.dataSource.filter = filterValue;
  }

  constructor() { }

  ngOnInit() {
  }

}
export interface Element {
  id: number;
  firstName: string;
  lastName: string;
  
}

const ELEMENT_DATA: Element[] = [
  
];