let positive = 1;
let negative = -1;
let float = 1.234;
let exponent = 1E3;
let exponent = 1e3;
+
-
*
/
**
%
=
+=
-=
*=
/=
**=
%=
let x = 1;
x++;
// x = 2
let x = 1;
++x;
// x = 2
let x = 1;
x--;
// x = 0
let x = 1;
--x;
// x = 0