I am trying to learn JS internals.I am currently trying to print message "yo" both times using the two console.logs. I tried using call,bind or apply to see if it will help but it still doesn't. On the execution stack it places func2 execution context above the func1 execution context. So, I was hoping it would take the func2.

var a = 'hello';

function func1() {
    console.log(a);
}

function func2() {
    var a = 'yo';
    func1();
    console.log(a);
}

func2();

var a = 'hello';

function func2() {
  var a = 'yo';

  function func1() {
    console.log(a);
  }
  func1();
  console.log(a);
}

func2();

Is there a way to print the internal message without declaring a function inside like the 2nd example without passing a variable to func1?

I think the reason why the first is not working is because this refers to the window but slightly confused due to Execution Context placed over the Execution Stack.