java script(head, body ,external)

JAVASCRIPT

javascript is used in three different ways these are :-

1. HEAD
2. BODY
3. EXTERNAL  

3.EXTERNAL:-in external javascript we need to create a two different files.One file is used for external script which is saved on ".js "extension. another file is used for html in which script is used to provide a sourse of external file<script src="filename.js"></script>.

eg:- 

 this file is saved on "ext.js" extension.

in this script src provides the extension of external java script file.

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"