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
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Method Parameters
handlerfunctionRequired
handler(): void The name of the function or the function expression to run when the element leaves the viewport.
Returns
Return Type:Element
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