text: function myVue(options){
  	this._init(options);
  }
  
  myVue.prototype._init  = function (options){
  	this.$options = options;
  	this.$el = document.querySelector(options.el);
  	this.$data = options.data;
  	this.methods = options.methods;
  }
  
  myVue.prototype._obverse = function (obj){
  	var value;
  	for(key in obj){
  		if(!obj.hasOwnProperty(key)) continue;
  
  		value = obj[key];
  		if(typeOf  value === "object"){
  			this._obverse(value);
  		}
  
  		// https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty 待研究
  
  		 
  	}
  }