javascript - Accessing object data with forEach, without the use of forEach's thisArg? -

I am studying and trying to get a better understanding of "this".

Although I have something that is confusing me: I may not have to use object data (in this case of "user" object) without the use of "this" argument of the unit

I can get information like this:

  var user = {tournament: "owner", data: [{name: T. Woods ", age: 37}, {name:" p. Miklson ", Age: 43}], clickhandler: function () {this.data.forEach (function (person) {console.log};})}} User.clickHandler (); //" t. Woods "," p. However, "undefined" has been brought down:  
  console.log (user.data .name);  
 
 or this "this. User is undefined "brings: 
 
  console.log (this.user.data.name);  
 
 What am I missing? Is not possible for "backgrac" and, for each, use access object information without the use of this agri? Or perhaps, what is written as long as "person"? 
 

< According to p>

:

If the thisArg parameter for / Code>, if applicable, callback It will be given, its value for its use otherwise, the value undefined will be passed for its use as its value.

It is not "Backgrac " thisArg .