avoid to show anything except English keyboard with javascript : how can do in javascript , when user typewrite anything  except numbers , don't show anything  in input field type text ,for some reason i can't change input type to number ?

and in other input type text when user typewrite any things except English keyboard (characters) , don't show anything.

                <input type="text" name="nationalityCode" placeholder="please just enter number" >

                <input type="text" name="name" placeholder="please Enter your name in English" >