Exclamation marks series #1: Remove an exclamation mark from the end of string.js

// Description:
// Remove an exclamation mark from the end of a string. For a beginner kata, you can assume that the input data is always a string, no need to verify it.

// Examples
// remove("Hi!") == "Hi"
// remove("Hi!!!") == "Hi!!"
// remove("!Hi") == "!Hi"
// remove("!Hi!") == "!Hi"
// remove("Hi! Hi!") == "Hi! Hi"
// remove("Hi") == "Hi"

// My Solution
function remove (s) {
    return s[s.length-1] === '!'? s.slice(0, s.length-1) : s
  }