Javascript function to parse only integer value

function checkNumberdot(event){
       if ( event.keyCode == 190 || event.keyCode == 46 || event.keyCode == 8 || event.keyCode == 9 || event.keyCode == 27 || event.keyCode == 13 ||
            // Allow: Ctrl+A
           (event.keyCode == 65 && event.ctrlKey === true) ||
            // Allow: home, end, left, right
           (event.keyCode >= 35 && event.keyCode <= 39)) {
                // let it happen, don't do anything
                return;
       }
       else {
           // Ensure that it is a number and stop the keypress
           if (event.shiftKey || (event.keyCode < 48 || event.keyCode > 57) && (event.keyCode < 96 || event.keyCode > 105 )) {
               event.preventDefault();
           }
       }
}