[Typo3] insert javascript file reference

[Guillaume]

Christian Trabold a écrit :
>>How can I insert a reference (in header supbpart) to an external 
>>javascript file using Typoscript ?
> 
> 
> http://typo3.org/documentation/document-library/doc_core_tsref/quot_PAGE_quot/
> 
> => headerData

Thanks for your help, but I'm a real beginner.
Can you give an example. I don't know what a CARRAY is ant its syntax.

Guillaume