A better typeof function

typeOf.js

function typeOf(object) {
  if(object && "name" in object.constructor) {
    return object.constructor.name;
  }
  if(typeof object === 'number' && object !== object) {
    return 'NaN';
  }
  var type = Object.prototype.toString.call(object);
  return type.substring(8,type.length-1);
}