Solve 'Exclamation marks series #1: Remove a exclamation mark from the end of string'

[odv]

https://www.codewars.com/kata/exclamation-marks-series-number-1-remove-a-exclamation-mark-from-the-end-of-string/train/javascript

[RazvanBugoi]

function remove(s){
  const input = s; 

  if (input[input.length - 1] === "!") {
    return input.slice(0, input.length - 1); 
  } 
    return input; 
}