6a Question

The isNaN function was created to make it easier for programmers to determine whether a value is a fair number. The NaN value in JavaScript is a unique value that stands for “Not a Number.” It is produced by several mathematical operations, such as taking the square root of a negative number or dividing a number by zero. When given a single argument, the isNaN function returns a Boolean result that is true if the argument is NaN (i.e., not a number) and false otherwise. In JavaScript, conditions involving multiple Boolean expressions are evaluated using the logical AND operator (&&) and the logical OR operator (||). Only when both operands are true does the logical AND operator (&&) return true. Otherwise, false is returned. In JavaScript (and many other programming languages), we utilize if/else statements to regulate the program’s flow depending on specific circumstances. We can only run specified chunks of code using if/else statements if a particular condition is true.