Dictionary Side panel example

This example allows users to right-click on a word and see the definition on the side panel using the Side Panel API.

NOTE: This example only defines the word extensions and popup.

Implementation Notes

When the user selects a word, we need to send it to the side panel, but that may not be open yet. To handle this we store the word in chrome.storage.session, which results in the following:

• If the side panel is already open, the storage.session.onChanged event will fire in the side panel.
• Otherwise, the value will be loaded from storage when the side panel opens.

Running this extension

1. Clone this repository.
2. Load this directory in Chrome as an unpacked extension.
3. Go to https://developer.chrome.com/docs/extensions/
4. Right-click on the "Extensions" word.
5. Choose the "Define" context menu

You should see the definition on the side panel