Function context (“this”) in nested functions

Question

When you invoke a top-level function in Javascript, the this keyword inside the function refers to the default object (window if in a browser). My understanding is that

Answer 1

In JavaScript, when a function is invoked without an explicit context, the context is the global object. In the case of web browsers, the global object is window.

Additionally, JavaScript has functional scope, so any variables or functions within a function are not accessible in a scope outside of that function. This is why you can't access window.innerFunc.