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

A nice one line, using ES6 arrow functions:

var basename = name => /([^\/\\]*|\.[^\/\\]*)\..*$/gm.exec(name)[1];