Path. Extname method in node.js

Method description:

Returns the path file extension, '.' if the path ends in '.', and '.' if no extension ends in '.', a null value is returned.

Grammar:

path.extname(p)

Since this method belongs to the path module, you need to introduce the path module (var path= require(" path ")) before using it.

Receiving parameters:

P            The path path

Example:

path.extname('index.html')

// returns

'.html'

path.extname('index.')

// returns

'.'

path.extname('index')

// returns

''

Source:

exports.extname = function(path) { 

  return splitPath(path)[3]; 

};