isNaN
isNaN(x)
Test whether a value is NaN (not a number)
Try it yourself:
| $1 | isNaN(2)
| |
| $2 | isNaN(0 / 0)
| |
| $3 | isNaN(NaN)
| |
| $4 | isNaN(Infinity)
|
Test whether a value is NaN (not a number)
Try it yourself:
| $1 | isNaN(2)
| |
| $2 | isNaN(0 / 0)
| |
| $3 | isNaN(NaN)
| |
| $4 | isNaN(Infinity)
|