javascript: remove duplicate slashes and trailing slash -

javascript how remove duplicate slashes , trailing slash using regex?
example:
origin url:

http://localhost:8080////app//user/login///   

to

http://localhost:8080/app/user/login   

i think question show powerful regex, don't understand why people vote against me , close question. closer must don't know best answer!!!

here simple regex based approach.

var url = 'http://localhost:8080////app//user/login///';  var sanitized = url            .replace(/^http\:\/\//, '') // remove leading http:// (temporarily)            .replace(/\/+/g, '/')       // replace consecutive slashes single slash            .replace(/\/+$/, '');       // remove trailing slashes  url = 'http://' + sanitized;  // url contains "http://localhost:8080/app/user/login"