final.js

var JS = {
  name: "The Javascript language",
  log() {
    this.name = "updated Javascript Language";
    console.log(this);

    var setName = newName => {
      // this points to JS object
      this.name = newName;
    };
    setName("Updated Again, The Javascript language");
    console.log(this);
  }
};

JS.log();