import { Component } from '@angular/core';
import * as e from 'cors';
declare function click_fun():any;
@Component({
selector: 'app-register',
templateUrl: './register.component.html',
styleUrls: ['./register.component.css']
})
export class RegisterComponent {
ngOnInit(): void{
}
click_fun(){
alert('Welcome')
}
}
"""How would you go about utilizing a JavaScript file that contains code for database connection, storing data in MongoDB, and credential authentication within the click_fun() function."""