javascript - 对象与普通函数

Question

//代码开始

function Person(name) {
    this.name = name;
    console.log(this.name); //Output 1    
    console.log(this); //Output 2    
}
var p1 = new Person("Object_Shashank");
var p2 = Person("Function_Shashank");

//代码结束

p1:

• 输出 1:Object_Shashank
• 输出 2:人员 {name: "Object_Shashank"}

p2:

• 输出 1:Function_Shashank
• 输出 2:窗口 {speechSynthesis: SpeechSynthesis, 缓存: CacheStorage, localStorage: Storage, sessionStorage: Storage, webkitStorageInfo: DeprecatedStorageInfo…}

有人可以解释一下“p2:输出2”

Answer 1

它打印 window 对象，因为 this 引用了 window 对象。

function Person(name){   
    this.name=name;    
    console.log(this.name); //Output 1    
    console.log(this);  //Output 2    <-- this `this` will point to the object it belongs to ,  which in this case of p1  is Object_Shashank while for p2 is window
}    
var p1=new Person("Object_Shashank");   
var p2=Person("Function_Shashank");  // Equivalent to p2 = window.Person("Function_Shashank")

编辑。添加了代码示例