🏠 New in Low Baseline Support: Shared worker
May 5, 2026
The SharedWorker() constructor runs a script in its own thread, which can send and receive messages with other scripts running at the same origin.
Source features
api.SharedWorkerGlobalScope[mdn]api.SharedWorkerGlobalScope.close[mdn]api.SharedWorkerGlobalScope.connect_event[mdn]api.SharedWorkerGlobalScope.name[mdn]api.SharedWorker[mdn]api.SharedWorker.SharedWorker[mdn]api.SharedWorker.error_event[mdn]api.SharedWorker.port[mdn]api.SharedWorker.SharedWorker.options_name_parameter[mdn]api.SharedWorker.SharedWorker.mime_checks[mdn]