Document.popupNode - Web APIs 编辑

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.

When a popup attached via the popup or context attributes is opened, the XUL document's popupNode property is set to the node that was clicked on. This will be the target of the mouse event that activated the popup. If the popup was opened via the keyboard, the popup node may be set to null. Typically, this property will be checked during a popupshowing event handler for a context menu to initialize the menu based on the context.

This property is only set for popups attached via the popup or context attributes. For other types of popups, the value is not changed. In these other cases, for example when calling the popup's showPopup method, you may wish to set the popupNode property directly beforehand.

This property applies only to XUL documents.

Syntax

var node = document.popupNode;

Example

<menupopup id="toolbarContextMenu">
  ...
  <menuitem oncommand="mailNewsCore.deleteButton(document.popupNode)">
  ...
</menupopup>

Browser compatibility

BCD tables only load in the browser

See also

• Defined in nsIDOMXULDocument.idl. XUL-specific method. Not part of any specification.