fix(docs): add context-menu item click handler example

[Tibing]

Please read and mark the following check list before creating a pull request:

• [] I read and followed the CONTRIBUTING.md guide.
• [] I read and followed the New Feature Checklist guide.

Short description of what this resolves:

fix #265

[liganggang]

Hello, according to your steps, failed to solve the problem

[liganggang]

Is it related to version？ with
Documentation is also not clear enough

[Tibing]

Hi @liganggang , could you please share your code? And what is the problem?

[idchlife]

Example does not clarify what "filter" function is used.

Also @Tibing, maybe the problem is the same as mine.
It actually does not work.

[umarkashmiri]

I did a workaround to create a component and implement my logic there and added a link to that component. e.g in your case, you need to log out. create a logout component and change your nbcontextMenu= "items"

items: [{title:"logout". link:"/logout"}]

Click subscription works but the problem is when you load the page again, one subscription is run automatically and it will not work if you want to handle logout.

[nnixaa]

@Tibing could you take a look?

[dminazarov]

@nnixaa
Hi
Can you help me?
I got a issue to control the margin property of menu title of nb-menu.
How to fix it?