How do I track whether a context menu item is already created by my Chrome Extension?

Question

There are only four methods for chrome.contextMenus:

create
update
remove
removeAll

I am wondering how do I check whether one menu is already created?

I tried this:

try {
  chrome.contextMenus.update("byname", {});
} catch (e) {
 // doesn't exist
}

But it seems the error cannot be caught (but shown in the console).

Thanks for any kind of tips!

Answer 1

Each chrome.contextMenus.create call returns an unique identifier. Store these identifiers in an array or hash to keep track of them.