Closure Example - Object Oriented Programming

closure_oo_example.js

function Person(name) {
   var secret = “secret!”
   this.name = name
   this.setName = function(newName) { this.name = newName }
   this.setNameToFoo = function() { this.name = foo }
   this.getSecret = function() { return secret }
}
 
var a = new Person(“Max”)
 
a.name //> “Max”
a.setName(“Oliver”)
a.name //> “Oliver”
a.setNameToFoo() //> ERROR: foo is undefined
 
var foo = “Foo”
a.setNameToFoo()
a.name //> “Foo”
 
a.secret //> undefined
a.getSecret() //> “Secret!”