i had put following code in my add.ctp file

$alert = $this->Js->alert('Hey there');
echo $alert;

But it simply print that message like

alert("Hey there");

it does not give me any alert box like javascript..means what i am not able to use Jshelper..also it doesn't provide in any error message.. I have also included my jquery in default.ctp if any body use Js helper and it works in ur code please give me some idea and i also want to tell u i am new in cakephp...Please help me i had spend 15 days on it but i have no answer yet please suggest any idea to me i wanna to implement ajaxcombo in it..