beforeinstallprompt event for web/native app install banners

An event for notifying the site that the browser is about to show an install banner, that also gives the site the ability to both suppress the banner, as well as show it later at a time of their choosing. Related: https://www.chromestatus.com/features/4540065577435136

Demos

• https://killer-marmot.appspot.com/web/
• https://github.com/GoogleChrome/samples/tree/gh-pages/app-install-banner

Documentation

• https://github.com/slightlyoff/AppInstallImprovements/blob/master/explainer.md#controlling-installation
• https://developer.mozilla.org/en-US/docs/Web/API/Window#Event_handlers
• https://developer.mozilla.org/en-US/docs/Web/API/Window/onbeforeinstallprompt
• https://developer.mozilla.org/en-US/docs/Web/API/BeforeInstallPromptEvent

Specification

Editor's draft

Status in Chromium

Blink components: Blink

Enabled by default (launch bug) in:

• Chrome for desktop release 45
• Chrome for Android release 45
• Android WebView release 45

Consensus & Standardization

• Firefox: Public support
• Edge: No public signals
• Safari: No public signals
• Web Developers: Positive

Owners

• owencm@chromium.org
• mgiuca@chromium.org
• talo@chromium.org
• slightlyoff@chromium.org
• benwells@chromium.org

Last updated on 2017-07-10