What is the difference between null and undefined

Question

In javascript what is the difference between null and undefined

Answer 1

An undefined variable is one that exists but has not been assigned a value. Which means that later, I can come back to my variable and give it a value that it did not have before.

Example:

let x;

console.log(x)
// undefined

x = 2; //x is now defined has value of 2

console.log(x)

// 2

Null is a value that you can assign to any variable if you want that variable to be empty. As you cannot leave the value blank (undefined), you must use null to point to an empty value.

Example:

let y = null

console.log(y)

// null (empty)

Answer 2

Chris Coder Thank you so much for the help

Answer 3

Prince Semilore You are welcome