random_javascript_quizzes.md

1. Reference Type (source)

let user = {
  name: "John",
  go: function() { alert(this.name) }
}
(user.go)()

Answer

Uncaught ReferenceError: can't access lexical declaration 'user' before initialization

The error appears because a semicolon is missing after user={...}, so it reads like: let user = { go:... }(user.go)() and see we are accessing user on the line where it is not even defined yet.
After inserting ; it will give John as a output.

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