Отправить функцию обратного вызова в JS

json_encode($arr);
?>

 
    
 Name: 
     
 Gender: < input type = "radio" name = "sex" value = "1" checked > male < input type = "radio" name = "sex" value = "2"> female
     
 Age: 
     
input type="submit" class="btn" value="submit">span id="msg">



div id="output">