ToolBar.onbeforeopen event

Occurs immediately before the ToolBar is opened.

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

Syntax

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

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

Event information

Synchronous	No
Bubbles	Yes
Cancelable	Yes

 

Event handler parameters

• eventInfo
  Type: CustomEvent**

  An object that contains information about the event.

Requirements

Minimum WinJS version	WinJS 4.0
Namespace	WinJS.UI

See also

ToolBar