.gitignore use case

As per last blog post

There is one more situation possible that we have to ignore something from local directory to remote directory

In attempt of finding soultion come across this soltuion

http://stackoverflow.com/questions/6147827/track-files-in-local-git-repo-but-ignore-in-remote

So the solution is

In local create another repo

For example it is code.git
Now we create javascript.git (We are not going to create local repo)
>cd /repo
>mkdir javascript.git
>cd javascript.git
>git --bare init

checkout that javascript.git inside code in local repository
#/var/www/html/code is the checkout of code.git

>cd /var/www/html/code
>git clone /repo/javascript.git javascript

Now here is an important factor
Create a file .gitignore
>cd /var/www/html/code
>vim .gitignore
/javascript
>cat .gitignore
/javascript

Now write something into javascript
>echo "Test" > javascript/test
>git commit -m "Javascript not going to commit"
#javascript not commited so in push master it is not going to push
>git push origin master
#Switch inside javascript
>cd javascript
>git commit -m "javascript will be commited"
>git push origin master

So,In this way javascript code will be commited locally but it will not sended to remote