null vs undefined

The best representation 😂😂

The last one should be a hand drawn picture of an elephant. Rorshach style.

null should just be blank space.

@PrivateGER no, because you do have an object, but it's not initialized with toiled paper)

@Leonid
You do know a null pointer points to random memory without any meaning, right?

@PrivateGER null must be assigned: x=null;
while undefined means you have declared a variable but it's not defined.
So, null - you have toilet paper holder but you not put paper in it.
Undefined - you should have toilet paper holder in bathroom, but you don't

@Leonid That's just false.

@PrivateGER what do you mean? I'm C# developer, not JS, but here is article about it: https://codeburst.io/javascript-nul...

@Leonid Oh god, JS
Well, that explains something. I know what you mean now.
I was talking about C++, where null is literally just a pointer into nothing. It has nothing to do with objects there.

This should be in every programming book and be shown in every university as well as being on the exams. No one would miss what null and undefined means.

A simpler explanation is highlighted here https://ajaymatharu.com/javascript-...