What is the use of window.external?

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For example in your form you may have a function such as:

public void HelloFromTheForm() {
   MessageBox.Show("Hi client, thanks for calling me!");
}
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The external property of the Window API returns an instance of the External interface, which was intended to contain functions related to adding external search providers to the browser. However, this is now deprecated, and the contained methods are now dummy functions that do nothing as per spec.,© 2005-2021 Mozilla and individual contributors. Content is available under these licenses.,EventseventafterprintanimationcancelanimationendanimationiterationbeforeprintbeforeunloadblurcopycutDOMContentLoadederrorfocushashchange languagechangeloadmessagemessageerrorofflineonlineorientationchangepagehidepageshowpastepopstaterejectionhandledstoragetransitioncancelunhandledrejectionunloadvrdisplayconnectvrdisplaydisconnectvrdisplaypresentchange,Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The external property of the Window API returns an instance of the External interface, which was intended to contain functions related to adding external search providers to the browser. However, this is now deprecated, and the contained methods are now dummy functions that do nothing as per spec.

external

The external property of the Window API returns an instance of the External interface, which was intended to contain functions related to adding external search providers to the browser. However, this is now deprecated, and the contained methods are now dummy functions that do nothing as per spec.

External
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List of available window.external methods,HTML Executable features its own script language HEScript which allows you to extend the functionality of your ebooks and publications. Since you can also use JavaScript in your HTML pages, the Dynamic HTML Object Model was extended so you can also control your publication and ebook through JavaScript: some JavaScript “external” commands (a.k.a. methods) are accessible from the window.external object.,ExamplesTo call an HEScript function from JavaScriptTo display a resource string in your HTML pagesCall an HEScript string function and return its result,List of available window.external methodsExamplesTo call an HEScript function from JavaScriptTo display a resource string in your HTML pagesCall an HEScript string function and return its result

Syntax:

window.external.[methodname](...)
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Window.addEventListener,,cheerioTiny, fast, and elegant implementation of core jQuery designed specifically for the server

function r() {
   var e;
   return m ? (window.Notification && window.Notification.permissionLevel ? e = window.Notification.permissionLevel() : window.webkitNotifications && window.webkitNotifications.checkPermission ? e = f[window.webkitNotifications.checkPermission()] : window.Notification && window.Notification.permission ? e = window.Notification.permission : navigator.mozNotification ? e = l : window.external && void 0 !== window.external.msIsSiteMode() && (e = window.external.msIsSiteMode() ? l : s),
      e) : void 0
}
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You can use the InvokeScriptAsync method with the JavaScript eval function to use the HTML event handlers, and use window.external.notify from the HTML event handlers to notify the application using the ScriptNotify event.,Scripts in the web view content can use window.external.notify with a string parameter to send information back to your app. To receive these messages, handle the ScriptNotify event.,You can interact with the content of the web view by using the InvokeScriptAsync method to invoke or inject script into the web view content, and the ScriptNotify event to get information back from the web view content.,In addition to the app handling the PermissionRequested event, the user will have to approve standard system dialogs for apps requesting location or media capabilities in order for these features to be enabled.

Add the following XML to your application manifest file:

<compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
    <application>
      <!-- Windows 10 -->
      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
    </application>
  </compatibility>
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All global JavaScript objects, functions, and variables automatically become members of the window object.,Since modern browsers have implemented (almost) the same methods and properties for JavaScript interactivity, it is often referred to, as methods and properties of the BOM.,If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:,The Browser Object Model (BOM) allows JavaScript to "talk to" the browser.

The Window Object

The window object is supported by all browsers. It represents the browser's window.

window
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