access to events Save CkEditor

hi
i in my project use of CKeditor
i need Access to event save it
namely i want user on click on button save i do a action
please help me how to it do
thanks

namely i want user on click on button save i do a action

You need to code this in javascript.
http://www.w3schools.com/jsref/event_onclick.asp

thanks for your answer
but what is event Save CkEditor
please help me