Micro jQuery-like starter-kit for mobile development

gistfile1.js

;(function(){
  
  var owns = {}.hasOwnProperty
    , toString = {}.toString
    , emptyArray = []

  function arrayify(self, arr){
    var i = 0, l = arr.length >> 0
    for(;i < l; i++) self[i] = arr[i]
    self.length = l
    return self
  }
  
  function $(str, ctx){ return new init(str, ctx) }
  
  function init(str, ctx){
    if(ctx === null) return arrayify(this, [])
    if(typeof ctx == "string" || toString.call(ctx) == "[object String]") ctx = document.querySelector(ctx)
    return arrayify(this, (ctx || document).querySelectorAll(str))
  }
  
  var proto = {
      init : init
    , find : function(str){return new init(str, this[0] || null)}
    , push : emptyArray.push
    , splice : emptyArray.splice
    , length : 0
  }
  
  $.prototype = proto.init.prototype = $.fn = proto
  
  window.$ = $
  
})()