Get directory of a file name in Javascript

Question

How to get the directory of a file?

For example, I pass in a string

C:\\Program Files\\nant\\bin\\nant.exe

I want a function that r

Answer 1

function getFileDirectory(filePath) {
  if (filePath.indexOf("/") == -1) { // windows
    return filePath.substring(0, filePath.lastIndexOf('\\'));
  } 
  else { // unix
    return filePath.substring(0, filePath.lastIndexOf('/'));
  }
}
console.assert(getFileDirectory('C:\\Program Files\\nant\\bin\\nant.exe') === 'C:\\Program Files\\nant\\bin');
console.assert(getFileDirectory('/usr/bin/nant') === '/usr/bin');