NavBar.onbeforeopen event
[NavBar is no longer available for use as of Windows Library for JavaScript (WinJS) 4.2. Instead, use SplitViewCommand. ]
Occurs immediately before the NavBar is opened.
Syntax
<div
data-win-control="WinJS.UI.NavBar"
data-win-options="{onbeforeopen : handler}">
</div>
function handler(eventInfo) { /* Your code */ }
// addEventListener syntax
navBar.addEventListener("beforeopen", handler);
navBar.removeEventListener("beforeopen", handler);
- or -
navBar.onbeforeopen = 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 onbeforeshow event, which has been removed.
Requirements
Minimum WinJS version |
WinJS 4.0 |
Namespace |
WinJS.UI |