Check if attachment is null in javascript

 Hi , 

I created a new workitem.

In the editor presentation i defined attachments under the tab links , the attachment ID is:

com.ibm.team.workitem.presentation.attachments

I want to create a java script  that will check if the attachment is null or contain any value (I don't care which value it contain).

Is it possible ? (According to https://jazz.net/forum/questions/157309/how-to-get-attachment-file-name- of-a-work-item-in-a-customized-attribute ,  you can't access the attachments collection from JavaScript)

If it's possible in java script , how can i do it ? 

BR,

Chen