java script(head, body ,external)

JAVASCRIPT

javascript is used in three different ways these are :-

1. HEAD
2. BODY
3. EXTERNAL  

2.BODY:-

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"