Allow numeric values only in input field using jQuery

$("#input1").keypress(function(e)
{
  // allow digits only
  if (e.which != 8 && e.which != 0 && (e.which < 48 || e.which > 57))
  {
    return false;
  }
});

Exe vs Dll

1.EXE is an extension used for executable files while DLL is the extension for a dynamic link library.
2.An EXE file can be run independently while a DLL is used by other applications.
3.An EXE file defines an entry point while a DLL does not.
4.A DLL would share the same process and memory space of the calling application while an EXE creates its separate process and memory space