Call javascript file externally

[Prajaktaj]

Hi All,
I am working on sharepoint and I have included the content editor web part in it.
There we can write the html file in it.
I know that we can call javascript functions from html by using <script> tag.
But I want to give a call to an external javascript file.

Does anybody know how to do that?
Thanks for any help.

[acoder]

If you just mean an external JavaScript hosted on another site, you can include that too in the same manner.