What does NaN mean JavaScript?

Not-A-Number
The global NaN property is a value representing Not-A-Number.

Is NaN a string?

We can check if a string is NaN by using the property of NaN object that a NaN != NaN. Let us define a boolean function isNaN() which returns true if the given argument is a NaN and returns false otherwise. We can also take a value and convert it to float to check whether it is NaN.

What causes NaN 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. It is still a numeric data type , but it is undefined as a real number .

Is NaN == NaN?

NaN is not equal to NaN! Short Story: According to IEEE 754 specifications any operation performed on NaN values should yield a false value or should raise an error. Thanks CJ J for sharing this.

What causes NaN?

“Nan” is produced if a floating point operation has some input parameters that cause the operation to produce some undefined result. For example, 0.0 divided by 0.0 is arithmetically undefined. Finding out the square root of a negative number too is undefined.

Why does NaN float?

NaN stands for Not A Number and is a common missing data representation. It is a special floating-point value and cannot be converted to any other type than float.

What does NaN stand for?

Not a Number
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.

Whats does NaN mean?

Is NaN an error?

NaN is an error value that means not a number. However, JavaScript considers the type of NaN to be number. Infinity is a value so big it can’t be represented by JavaScript numbers.

What does NaN stand for in text?

NaN is short for Not a Number.

Is a NaN a grandma?

The word nan for grandma is a shortening of the word nana. Both of these words probably are child pronunciations of the word nanny. Etymonline describes this word as originating as a child’s word for “female adult other than mother”.

How do you check for Nan in JavaScript?

The correct way to detect NaN in Javascript is to use the isNaN() function. NaN is a “number” indicating a mathematical operation that results in “Not a Number”.

How do you test for Nan in JavaScript?

In JavaScript, the best way to check for NaN is by checking for self-equality using either of the built-in equality operators, == or === . Because NaN is not equal to itself, NaN != NaN will always return true. Of course, such a NaN test in your code is not always readable, so it is a good idea to use a comment or to create a wrapper function:

What is typeof(Nan) in JavaScript?

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” can be accessed using a special expression NaN, or as a property of the global object or Number function:

What is Nan in AngularJS?

NaN is a property of the global object. In other words, it is a variable in global scope. The initial value of NaN is Not-A-Number – the same as the value of Number.NaN. In modern browsers, NaN is a non-configurable, non-writable property.