problem in defining empty list of a class in angular 12

Issue

i have a problem defining a empty list of a class in angular.this is my class

export class category{
public Id:number;
public Name:string;
constructor(
){}}

i got this error.

An element access expression should take an argument

any help will be highly appreciated

Solution

You got this error because you are trying to declare your variable after import statements, not into the class.
You should declare it as below:

//import statements
@Component({
  selector: "app-root",
  templateUrl: "./app.component.html",
  styleUrls: ["./app.component.css"],
})
export class AppComponent {
  category: category[] = [];
  constructor() {}

  ngOnInit() {}
}

Answered By - Merna Mustafa