how to get value for variable in jquery code and pass to codebehind as insert parameter??

hi,
I have a jquery solution that allows user to enter international telephone number.
I simply want to get the number value and then insert that to my database - ?

here is my code  from this site  http://jackocnr.com/intl-tel-input.html          <p>        Select your country prefix and enter mobile number without the leading "0"           </p>           

JQUERY                   <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> <script src="build/js/intlTelInput.min.js"></script> <script>   ...