Why “this” inside of a function's returning object window

Question

there is two type of scope in javascript named function scope global scope

now i am executing this code

function abc()
{
alert(this)         


        

Answer 1

The this keyword refers to the object the function belongs to, or the window object if the function belongs to no object.

Reference

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/this