Javascript calling function within the parent function

Calling public function in private and public functions.
[code language=”javascript”]
var greeting = function()
{

this.publicHello = function(){ console.log("Hello"); }

this.publicHello(); // calling the publicHello when this object is created

this.publicSayHello = function()
{
this.publicHello(); // calling the public function in public function
}
var _this = this;
function privateSayHello()
{
_this.publicHello(); // calling the public function in a private function
}
}

var g = new greeting(); // prints Hello
g.publicHello(); // prints Hello
g.publicSayHello(); // prints Hello
g.privateSayHello(); // Uncaught TypeError: Object [object Object] has no method ‘privateSayHello’
[/code]

Calling private function in private and public functions.
[code language=”javascript”]
var greeting2 = function()
{

var privateHello = function(){ console.log("Hello"); }

privateHello.call(this); // calling the privateHello when this object is created

this.publicSayHello = function()
{
privateHello.call(this); // calling the private function in public function
}
function privateSayHello()
{
privateHello.call(this); // calling the private function in a private function
}
privateSayHello.call(this); // calling the privateSayHello when this object is created
}
var g = new greeting2(); // prints Hello Hello
g.publicSayHello(); // prints Hello
[/code]

Summary: