NaN (JavaScript)
A value that is not a number.
Defined in
Number (Standard - JavaScript)Syntax
Number.NaNUsage
NaN is a constant and has the same value whether called statically as shown in the syntax or from an object.Examples
This example prints NaN.function p(stuff) {
print("<<<" + stuff + ">>>");
}
try {
p(Number.NaN.toString()); // prints <<<?>>>
n = new Number(Math.sqrt(-2));
p(n); // prints <<<NaN>>>
} catch(e) {
p("Error = " + e);
}