ReferenceError: 「alert」 is not defined

用Node.js單獨運行js文件時，其中定義的alert不可用

alert is not part of JavaScript, it's part of the window object provided by web browsers. 

var name = "The Window";

function ttt() {    

return(this.name);
}
alert(ttt.call(window);    
//alert(window);

var object = {    

name : "My Object",    
getNameFunc : function(){        

return function(){            

return this.name;       
 };    
}};

console.log(object.getNameFunc()());    // console    The Windowvar name = "The Window";

var object = {   
 name : "My Object",    
getNameFunc : function(){       
 var that = this;       
 return function(){           
 return that.name;       
 };    
}};

console.log(object.getNameFunc()());        //console     My Object

若是是在Node.js中運行的話，window會提示「undedined」。