MSApp Methods

This section describes MSApp methods, which support Windows Store apps using JavaScript.

Note The MSApp object and its members are supported only for Windows apps using JavaScript (WWAs). Like many WWA objects, the MSApp object only exists in the local context of a WWA (that is, an HTML document in a WWA loaded via the ms-appx URI scheme); otherwise, the object doesn’t exist (and consequently, none of its methods and properties are available).

In this section

Topic	Description
addPublicLocalApplicationUri	Specifies local context Uniform Resource Identifiers (URIs) for the zone elevation that is allowed.
clearTemporaryWebDataAsync	Clears caches and indexedDB data for the app or WebView.
createBlobFromRandomAccessStream	Creates a Blob from an IRandomAccessStream object. This method should be used when dealing with IRandomAccessStream objects in Apps in order to create a W3C based object from the stream. Once the blob is created, it can be used with the FileReader, URL APIs, and XMLHttpRequest. .
createDataPackage	Converts the user’s or the applications’s specified range to an HTML fragment that can be shared.
createDataPackageFromSelection	Converts the user’s or the applications’s selection to an HTML fragment that can be shared.
createFileFromStorageFile	Converts a standard World Wide Web Consortium (W3C)File object to its WinRT equivalent `StorageFile`.
createNewView	Opens the specified URI in a new view.
createStreamFromInputStream	Creates an MSStream from an InputStream.
execAsyncAtPriority	Schedules a callback to be executed at a later time according to the given priority.
execAtPriority	Runs the specified callback function at the given contextual priority.
execUnsafeLocalFunction	Disables script injection validation for the passed function within the local context.
getCurrentPriority	Returns the current contextual priority.
getHtmlPrintDocumentSource	Returns the source content that is to be printed.
getViewOpener	Gets the window (app view) for the current app.
isTaskScheduledAtPriorityOrHigher	Returns a Boolean value indicating whether there is pending work at the given priority level or higher.
suppressSubdownloadCredentialPrompts	Controls whether an app suppresses possible authentication prompts during the download of resources.
terminateApp	Terminates the current application and generates a failure report.