Tooltip.onbeforeopen event

發行項
01/26/2017

Raised just before the Tooltip appears.

Syntax

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

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

Event information

Synchronous	No
Bubbles	No
Cancelable	No

Event handler parameters

eventInfo
Type: CustomEvent**

An object that contains information about the event.

Remarks

Setting event handlers declaratively (in HTML)

To set the event handler declaratively, it must be accessible to the global scope, and you must also call WinJS.Utilities.markSupportedForProcessing or WinJS.UI.eventHandler on the handler. You can make the handler accessible to the global scope by using WinJS.Namespace.define. For more information, see How to set event handlers declaratively.

Requirements

Minimum WinJS version	WinJS 1.0
Namespace	WinJS.UI

共用方式為