Siebel eScript Language Reference > Methods Reference > Data Querying Methods >

Is NaN Method

The Is NaN method determines if the value that the value argument contains is a number. It returns one of the following values:

• The value is a number. It returns the following value:

  True

• The value is not a number. It returns the following value:

  False

If the value argument references an object, then the Is NaN method always returns true because an object reference is not a number. For more information on the number object, see NaN Numbers.

Format

isNaN(value)

Table 102 describes the arguments for the Is NaN method.

Example

The following examples use the Is NaN method:

IsNaN("123abc") //returns true

IsNaN("123") //returns false

IsNaN("999888777123") //returns false

IsNaN("The answer is 42") //returns true

Related Topics

For more information, see Is Finite Method.