JavaScript闭包实例：this指向与变量保存的差异

var name = "The Window";
var obj = { 
  name: "My Object", 
  getNameFunc: function() {
    return function() { 
     return this.name; 
    }; 
  } 
};
console.log( obj.getNameFunc()() );

var name = "The Window";
var obj = { 
  name: "My Object", 
  getNameFunc: function() {
    var that = this;
    return function() { 
     return that.name; 
    }; 
  } 
};
console.log( obj.getNameFunc()() );