A function is a scope, the scope has been formed in the code compile time
Object-oriented js: function Fun () {} class is capitalized
obj = new Fun () to instantiate
window is the object of the entire global variables
js no dictionary, only the object
Since execution of the function (function () {console.log (that.Name)}) ()
obj.Func=function(){this} this是obj
(Function () {this}) () this is window-- "Global Variables
