java script(head, body ,external)

JAVASCRIPT

javascript is used in three different ways these are :-

1. HEAD
2. BODY
3. EXTERNAL  

1. HEAD:- script is used in a head part.
   input:-
   
   
   output:-
   
    
   

   in this program  we enter no. between 1 to 10 for valid case only.lets we enter here any no. like "2" then output shows like this:-

   
   
   
   
   

   if we enter any no. greater than 10 then this is a invalid case according to our condition.To check for invalid case we enter  any value greater than 10 like"77"