Website Developer Interview Question:

Tell me what Is The Difference Between Undefined Value And Null Value?

Submitted by: Muhammad

<undefined> Vs. <null> value.

1. A variable will have <undefined> value if it has declaration but not assigned any value.

2. A variable will yield a <null> value if assigned with null.

3. <undefined> is a type itself whreeas <null> is an object.

4. <undefined> value is set via JavaScript engine whereas null value is set directly in the code.
Submitted by: Muhammad