NavBar.onbeforeclose event

Статья
01/26/2017

[NavBar is no longer available for use as of Windows Library for JavaScript (WinJS) 4.2. Instead, use SplitViewCommand. ]

Occurs before the NavBar is closed.

Learn about events with Quickstart: adding HTML controls and handling events.

Syntax

<div data-win-control="WinJS.UI.NavBar" data-win-options="{onbeforeclose : handler}" />

function handler(eventInfo) { /* Your code */ }
 
// addEventListener syntax
navBar.addEventListener("beforeclose", handler);
navBar.removeEventListener("beforeclose", handler);

Event information

Synchronous	No
Bubbles	Yes
Cancelable	Yes

Event handler parameters

eventInfo
Type: Event**

An object that contains information about the event.

Remarks

This replaces the onbeforehide event, which has been removed.

Requirements

Minimum WinJS version	WinJS 4.0
Namespace	WinJS.UI

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