Please, is sample code of "this reference" in Arraw function chapter explicit?

[Lucky4]

This is the origin sample code, the result is 1.

function myFunc() {
  this.myVar = 0;
  setTimeout(() => {
    this.myVar++;
    console.log(this.myVar);
  }, 0);
}

myFunc(); // 1

And the following code has the same reuslt 1.

function myFunc() {
  this.myVar = 0;
  setTimeout(function() {
    this.myVar++;
    console.log(this.myVar);
  }, 0);
}

myFunc(); // 1

And i think use an object manner write this example maybe better? Like this:

myVar = 123;

var object= {
  myVar: 0,
  f: function () {
    setTimeout(() => {
      this.myVar++;
      console.log(this.myVar);
    }, 0);
  }
}

object.f(); // 1

And this is the comparing code:

myVar = 123;

var object= {
  myVar: 0,
  f: function () {
    setTimeout(function() {
      this.myVar++;
      console.log(this.myVar);
    }, 0);
  }
}

object.f(); // 124