How to manually trigger a background sync (for testing)?
问题 In Chrome, is there any way to manually trigger a background sync for testing/development purposes? 回答1: You can now use a force sync in developer tools in Chrome on your service worker. Go Dev Tools --> Application --> Service Worker and you will see Sync button and next to it a space to write commands. 回答2: There's no way to do this in Chrome right now (April 2016). Follow this bug for updates. 来源： https://stackoverflow.com/questions/36718224/how-to-manually-trigger-a-background-sync-for