isNaN source npm
_.isNaN(value)
Checks if value
is NaN
.
Note: This method is not the same as isNaN
which returns true
for undefined
and other non-numeric values.
Arguments
- value (*)
The value to check.
Returns (boolean)
Returns true
if value
is NaN
, else false
.
Example
_.isNaN(NaN);
// => true
_.isNaN(new Number(NaN));
// => true
isNaN(undefined);
// => true
_.isNaN(undefined);
// => false