Need a basename function in Javascript

Question

I need a short basename function (one-liner ?) for Javascript:

basename(\"/a/folder/file.a.ext\") -> \"file.a\"
basename(\"/a/folder/file.ext\") -> \"f         


        

Answer 1

Using modern (2020) js code:

function basename (path) {
  return path.substring(path.lastIndexOf('/') + 1)
}
console.log(basename('/home/user/file.txt'))