Callback function
A simple example on 'How to use Javascript callback functions'
# This is the main function - - - - -
function functionA(name, fn_end){
var output = {id:2, title:'The empire of the ' + name };
fn_end(output);
}
# This function will be called just after "functionA" ends - - - -
var functionB = function(output){ alert("Result is: " + output.title); }
# This is just a simple var that will be passed as a parameter - - - -
var name = "SUN";
var result = functionA (name, functionB);