Is it possible to check if a variable is equal to window object or not?

Question

What I'm trying to do an example:

let var1 = window;

if(var1 == window){
    //do something
}

Will it operate good?

Not asking this:

let a = {c: 'a'};
let b = {c: 'a'};

if(a == b){
// do something
}

There is a list in responsive page. When the page is loaded, if page width lower than 768px function gets window object for detect scroll position like this:

if((window.innerWidth || document.documentElement.clientWidth || document.documentElement.clientWidth) < 768){
  flowObj.scrollElement = window;
}else{
  flowObj.scrollElement = document.querySelector('.flow-list').parentNode;
}
// If width lower than 768px list-container CSS change to height: auto; scroll: none; so list scroll on body

Need to change scroll position with this:

if(flowObj.scrollElement == window){
 flowObj.scrollElement.scrollTo(0, value);
}else {
 flowObj.scrollElement.scrollTop = value;
}

Need to know is it working good?

Answer 1

let var1 = window;

Var1 is a reference pointing at the window object. That is, you only have a "key" to the window object itself. As long as you don't change var1's value, a shallow comparison with window will always return true

On the other hand, if you try to make a deep copy of the window object, it will get tricky because the window object changes over time, but the object you created by deep cloning won't.