Try this.. credits to https://stackoverflow.com/users/1169519/teemu
for answering my question here: https://stackoverflow.com/questions/24651811/jquery-keyup-doesnt-work-with-keycode-filtering?noredirect=1#comment38213480_24651811
This solution helped me to progress on my project.
$("#your_textbox").on("input propertychange",function(){
// Do your thing here.
});
Note: propertychange for lower versions of IE.