Is it a number.js

// Given a string s, write a method (function) that will return true if its a valid single integer or floating number or false if its not.

// Valid examples, should return true:

// isDigit("3")
// isDigit("  3  ")
// isDigit("-3.23")
// should return false:

// isDigit("3-4")
// isDigit("  3   5")
// isDigit("3 5")
// isDigit("zero")

// My Solution
function isDigit(s) {
//   return typeof parseInt(s) === 'number'
  if (!s.trim().length) {return false}
  return !isNaN(Number(s));
}