Get a file extension with javascript (no regex)

getFileExtension.md

Get a file extension simply, no regex

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const getFileExtension = (filename) => {
  const splitedName = filename.split('.');
  console.log(splitedName) // [ 'fileblabla', 'pdf' ]
  if (splitedName.length === 1 || (splitedName[0] === '' && splitedName.length === 2)) {
    return '';
  }
  return splitedName.pop();
};

const result = getFileExtension('fileblabla.pdf')
console.log(result) // pdf