Parse a URI using the DOM

parseUri.coffee

parseUri = (uri) ->
  result = {}
  a = document.createElement 'a'
  props = 'protocol hostname host pathname port search hash href'.split ' '
  
  a.href = uri
  
  # Copy relevant properties
  result[prop] = a[prop] for prop in props
  
  # For window.location compatibility
  result.toString = -> a.href
  result.requestUri = a.pathname + a.search

  # For JSON
  result.toJSON = result.toString
  
  result

parseUri.js

var parseUri = function (uri) {
  var result = {}, index, prop,
           a = document.createElement('a'),
       props = 'protocol hostname host pathname port search hash href'.split(' ');
  
  a.href = uri;
  
  // Copy relevant properties
  for (index in props) {
    prop = props[index];
    result[prop] = a[prop];
  }
  
  // For window.location compatibility
  result.toString = function () {return a.href;}
  result.requestUri = a.pathname + a.search;

  // For JSON
  result.toJSON = result.toString;
  
  return result;
}