onViewportLeave( )

Adds an event handler that runs when an element is no longer displayed in the viewable part of the current window.

An element leaves the viewport when the page is scrolled so that the element is completely out of view. An element also leaves the viewport if it was shown or expanded and is then hidden or collapsed from the viewable part of the current window. onViewportLeave() is not fired for hidden or collapsed elements even if they are scrolled out of view.

You can also define an event handler using the Properties and Events panel.

Method Declaration
This method does not take any parameters
Return Type:Element
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