The this in the function inside the function is pointing to the window

Just saw a question about this,

1 var name= "the window"; 2     var object={3        name: "Silence",4        packname:function () { 5             return this.name; 6         }7    }8     Console.log (Object.packname ()); 　　

In general, in JavaScript, this points to the current object when the function executes . This refers to object. Output is silence

Change it.

1 var name= "the window"; 2     var object={3        name: "Silence",4        packname:function () { 5             return this.name; 6         }7    }8    var show=object.packname; 9     Console.log (Show ());

When there is no explicit execution of the current object, this points to the Global object window.

Here Show=object.packname;show (); Show does not explicitly indicate the execution object, so it is equivalent to Window.show (); The result is the window

Change it again.

1  　　 var name= "the window";2 var silence={3 name: "Silence",4 packname:function () {5 return this.name;6         }7     }8 var seraph={9 Name: "Seraph",Ten packname:function () { One var fun=silence.packname; A return Fun (); -         } -     } theConsole.log (Seraph.packname ());

Like 2, fun (); get the Window,fun () to see the function inside the function pointing to the window. That's what I understand.

The this in the function inside the function is pointing to the window