1

I am trying to access the name defined in the constructor via a method, but it is returning undefined. Here is the simple code:

class Person {
  constructor(){
     let name = 'Tom';
    }
  logName(){
     console.log(this.name);
   }
}

let x = new Person();
x.logName();

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  • 1
    Assign to this.name in order to assign it as a property of the instantiated object - else it's just a free variable, with all the usual scoping rules Commented May 27, 2018 at 9:51
  • let this.name = 'Tom' returns error in constructor. Why? Commented May 27, 2018 at 9:53
  • @yuvrajprogrammer Just this.name = "Tom";. this.name is not an identifier. Commented May 27, 2018 at 9:53
  • Don't use var or let to define properties Commented May 27, 2018 at 9:53
  • Thank you all for the explanation. Commented May 27, 2018 at 9:54

1 Answer 1

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3

You need to define the name as a property of the object. In your case this.name

class Person {
  constructor(){
     this.name = 'Tom';
    }
  logName(){
     console.log(this.name);
   }
}

let x = new Person();
x.logName();

In your code, you've defined the variable name inside the constructor. It remains in there but doesn't escape.

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