javascript - Breaking out a closure to explain it to the unitiated -

i've got this, , works:

myobject.myfunction = (function() {     var closure = 0;      return function(value) {         if (arguments.length) {             closure = value;         } else {             return closure;         }     } })(); 

it acts both getter , setter, calling myfunction(3.14) set closure , calling myfunction() closure's value.

q: can separate out more wordy example (without being ridiculous)? i'd this:

myobject.myfunction1 = myfunction2; myobject.myfunction1();  function myfunction2() {     var closure = 0;      return function(value) {         if (arguments.length) {             closure = value;         } else {             return closure;         }     } } 

i'm trying break down javascript small chunks possible students can concentrate.

edit 1:

oh wait: don't need myfunction2 @ all.

are looking simplest way explain closures like:

function closure() {     var privatedata = "i'm hidden!";      return {         get: function () {             return privatedata;         },         set: function (arg) {             privatedata = arg;         }     }; }  var privatedataaccess = closure();  console.log(typeof (privatedata)); // logs undefined -- privatedata out of scope console.log(privatedataaccess.get()); // logs "i'm hidden!" privatedataaccess.set("now changed me!"); console.log(privatedataaccess.get()); // logs "now changed me!" 

that simple gets think :-)