Why increment operator is not working???

Question

Please see the code below:

Also please can you answer what is operand and what is object????
https://code.sololearn.com/WeaDOJmtXcJX/?ref=app

Answer 1

You can not increase 5, because it's a constant.

You can only change a variable.

For example:

var x = 5;
++x;

Answer 2

Ok thanks