How to check if user can Execute a client-callable script include

[Sominnown]

I have a Client-callable script include with ACLs and an Onload client script of catalog item calls GlideAjax.

Users can see my catalog item in their service portal

- If users pass ACL, they can excute it

- But if an user can't pass ACL, a Javascript error message will show up

Do we have any method to check if user can excute that GlideAjax before execute it? (simular to current.canRead() current.canWrite())

[Sonam Tiwari]

@Sominnown ,
I see what you are saying. Even though it saves us from calling script include in unfavourable cases thus saving the whole execution. In the favourable one, its going to be a duplicate execution.