BeforeInstallPromptEvent
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
The BeforeInstallPromptEvent
is the interface of the beforeinstallprompt
event fired at the Window
object before a user is prompted to "install" a website to a home screen on mobile.
This interface inherits from the Event
interface.
Constructor
BeforeInstallPromptEvent()
Non-standard Experimental-
Creates a new
BeforeInstallPromptEvent
object.
Instance properties
Inherits properties from its parent, Event
.
BeforeInstallPromptEvent.platforms
Read only Non-standard Experimental-
Returns an array of string items containing the platforms on which the event was dispatched. This is provided for user agents that want to present a choice of versions to the user such as, for example, "web" or "play" which would allow the user to choose between a web version or an Android version.
BeforeInstallPromptEvent.userChoice
Read only Non-standard Experimental-
Returns a
Promise
that resolves to a string containing either "accepted" or "dismissed".
Instance methods
BeforeInstallPromptEvent.prompt()
Experimental-
Allows a developer to show the install prompt at a time of their own choosing. This method returns a
Promise
.
Example
window.addEventListener("beforeinstallprompt", (e) => {
// log the platforms provided as options in an install prompt
console.log(e.platforms); // e.g., ["web", "android", "windows"]
e.userChoice.then((choiceResult) => {
console.log(choiceResult.outcome); // either "accepted" or "dismissed"
}, handleError);
});
Browser compatibility
BCD tables only load in the browser