just an idea I wanted to play with; for a searching app, shouldn't the user be able to refresh and get the same parameters in the field/query?

persist_url.coffee

inputRe = /input|select|textarea/i  # some browsers do uppercase tagNames; also faster than 3 strcmp

cache = {}
elByName = (el) ->
  cache[el.name] ?= document.getElementsByName el.name

document.addEventListener 'load', (e) ->
  document.addEventListener 'change', (e) ->
    target = e.target
    
    if inputRe.test target.tagName
      window.location.search ||= '?'
      window.location.search += "#{ target.name }=#{ [ t.value for t in elByName target.name ].join ',' ]"