Defining and initializing variables in TypeScript

Trying to get the hang of Angular and TypeScript, but I'm stuck on why I can't access my variable after declaring it.

It looks something like this.

export class aComponent implements OnInit {

  num : Number;
  num = currentUser.Id

Encountering an error that says "Duplicate identifier 'num'".

This snippet is from a TS file within a component.

Answer №1

When attempting to declare a new variable with the same name, it may result in an error as you are outside the scope of a method. If you intend to initialize num, consider implementing it like this:

num: number = currentUser.Id;

Alternatively, if you are declaring currentUser within the class:

num: number = this.currentUser.Id;

Answer №2

Delete the line: "num = currentUser.Id" and insert "this.num = currentUser.Id" into the ngOnInit function

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