.on( events [, selector] [, data], handler(eventObject) )

A delegated-events approach attaches an event handler to only one element, the tbody, and the event only needs to bubble up one level (from the clicked tr to tbody):

$("#dataTable tbody").on("click", "tr", function(event){
	alert($(this).text());
});
 
 
 
 
/////
function notify(){
       alert("clicked"); 
}
 
$("button").on("click", notify);