Are calling a function in the console and calling the function in the js different?

Question

So I was trying to write a JS programme when I found out that when I call the function in the js file and run it, it gives me a different output than the output I get when I don't call the function in the js and instead run it in the console.

So I have put my code for the different scenarios below:

1. When I call my function inside js file itself and then run it.

var output=[];
var count=1;

function fizzBuzz(){
   
   output.push(count);
   count=count+1;
   
  console.log(output);
}

fizzBuzz();

2. When I call the function in the console.

var output=[];
var count=1;

function fizzBuzz(){
   
   output.push(count);
   count=count+1;
   
  console.log(output);
}

Outputs: 1) Every time I run it, it gives me the same output i.e; [1].

    2)Calling for the 1st time, output= [1]
                  2nd time, output=[1, 2]
                  3rd time, output= [1, 2, 3]
                and goes on.