The unary plus (+) operator is a unary operator and converts its operand to a number, if it isn’t already. It is equivalent to the Number() constructor called as a function. Let us see some examples of the Unary + operator and what does it imply in different scenarios
+new Date; // implies Number(new Date)
a + “” // implies String(a)
+a // implies Number(a), so “+1.2” becomes 1.2
Unary plus is the preferred way of converting something into a number!
a = null; a = +a; // value of a is now 0;
Note: The unary plus operator does not change the sign of an integer. So if the number is negative, the unary + does not change the sign to a positive