What is NaN function in JavaScript?

Definition and Usage In JavaScript NaN is short for “Not-a-Number”. The isNaN() method returns true if a value is NaN. The isNaN() method converts the value to a number before testing it.

How do you get NaN in JavaScript?

In JavaScript, NaN is a number that is not a legal number. The Number. isNaN() method returns true if the value is NaN , and the type is a Number.

What is a NaN in JS and what is its type?

NaN number The number type in JavaScript is a set of all number values, including “Not A Number”, positive infinity and negative infinity. “Not a Number” is a value that does not represent a real number, despite having number type. NaN is useful to represent faulty operations on numbers.

What are NaN values?

NaN stands for Not A Number and is one of the common ways to represent the missing value in the data. It is a special floating-point value and cannot be converted to any other type than float. NaN value is one of the major problems in Data Analysis.

How is NaN used?

In computing, NaN (/næn/), standing for Not a Number, is a member of a numeric data type that can be interpreted as a value that is undefined or unrepresentable, especially in floating-point arithmetic.

What data type is NaN in JavaScript?

By definition, NaN is the return value from operations which have an undefined numerical result. Hence why, in JavaScript, aside from being part of the global object, it is also part of the Number object: Number. NaN. It is still a numeric data type , but it is undefined as a real number .

What datatype is NaN JavaScript?

What is NaN datatype?

Is NaN a data type in JavaScript?

The type of NaN , which stands for Not a Number is, surprisingly, a number. The reason for this is, in computing, NaN is actually technically a numeric data type. However, it is a numeric data type whose value cannot be represented using actual numbers.