Truthy or Falsy?

A value is said to be "truthy" if it evaluates to true in a Boolean context. All values are truthy in JavaScript unless they're one of the following:

• false
• null
• undefined
• 0
• NaN
• ""

In JavaScript, an empty object and an empty array are both considered "truthy," but an empty string is considered false when evaluated as a Boolean (this behavior is what we call "falsey").

Create a function that takes an argument of any data type and returns 1 if it's truthy and 0 if it's falsy.

Examples

isTruthy(0) ➞ 0

isTruthy(false) ➞ 0

isTruthy("") ➞ 0

isTruthy("false") ➞ 1

Notes

• You may have to take into account NaN's unique behavior in JavaScript. While other falsey values are equal to themselves, NaN != NaN