How to return a number if possible, else a string.

Question

Is it possible (in Javascript) to create a function with an argument n that returns the number n if it's possible to convert it to a number, else the string n?
Example of what i mean :

numberIfPossible("4"); //returns the number 4
numberIfPossible("text"); //return the text "text"

Answer 1

yes.
Use the isNaN function.

Answer 2

That worked. Thank you.