JavaScript ApplicationCache : EventTarget

The ApplicationCache describes the state of files cached for the current page. Pages set the manifest="<location to manifest>" attribute on the <html> tag to define the set of files to be cached. Obtained through the window.applicationCache property. See Offline WebPage Spec for more details.

Spec

Instance Properties

status : Number readonly

The current status of the cache. Will be one of UNCACHED, IDLE, CHECKING, DOWNLOADING, or UPDATEREADY.

Spec

Instance Methods

swapCache() : undefined

Replaces application cache with the updated list of files from the server. This does not automatically update the resources of the page. You can use location.reload() to update the page.

Spec

update() : undefined

Checks to see if there is an updated manifest file on the server. This automatically happens once when the page first loads.

Spec

Instance Events

oncached / 'cached' event

listener(event : Event) : undefined

onchecking / 'checking' event

listener(event : Event) : undefined

Event fired when the browser is going to check to see if the manifest has been updated on the server.

ondownloading / 'downloading' event

listener(event : Event) : undefined

Event fired when the manifest has upated and the browser is going to start downloading it.

onerror / 'error' event

listener(event : Event) : undefined

Event fired when the server returned an error status when attempting to download the app manifest.

onnoupdate / 'noupdate' event

listener(event : Event) : undefined

onprogress / 'progress' event

listener(event : ProgressEvent) : undefined

onupdateready / 'updateready' event

listener(event : Event) : undefined

Event fired when all resources listed in the manifest have been downloaded.

ApplicationCache Properties

CHECKING : Number readonly

DOWNLOADING : Number readonly

IDLE : Number readonly

UNCACHED : Number readonly

UPDATEREADY : Number readonly

home license contribute feedback