function typeFun(target){
  var template= {
    "[object Array]" : "array",
    "[object Object]" : "object",
    "[object Number]" : "number - object",
    "[object Boolean]" : "boolean - object",
    "[object String]" : "string - object"
  }
  if(target === null) {
    return 'null'
  }
  if(typeof(target) == "object"){
    var str = Object.prototype.toString.call(target);
    return  template[str];
  } else{
    return typeof(target);
  }
}
typeFun(new Number());