Openpanelonactionclick !!exclusive!! -

In this example, handleActionClick updates the state to open the panel.

: Ensure your manifest.json includes the "sidePanel" permission. openpanelonactionclick

chrome.sidePanel.setPanelBehavior( openPanelOnActionClick: true ) .catch((error) => console.error(error)); Use code with caution. Copied to clipboard In this example, handleActionClick updates the state to

✅ Reduces cognitive load ✅ Feels 2x faster, even if backend latency is the same ✅ Keeps users in context (no full-page reloads, no modal stacking) In this example

To use this feature in a Manifest V3 extension , you must configure it within your background service worker.