[Sudesh Nair]

i m lil bit confuse with the concept of [color=#ff0000]callback function[/color]. any one here who can make me understand the concept of [color=#ff0000]callback function[/color]. pls give me one simple example too...

[victor]

HI! You can read about callback function here http://en.wikipedia.org/wiki/Callback_(computer_programming).

[victor]

new Ajax.Request('http://example.com/do_it',

{

  method: 'post',

  onSuccess: function(transport) { // callback function (if request is successful). 

    window.alert("Done!"); // 

  }, //



  onFailure: function() { // callback function 

    window.alert("Error!"); // if request is unsuccessful   

  }

});