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onViewportEnter( )
Adds an event handler that runs when an element is displayed in the viewable part of the current window.
Description
An element enters the viewport when the page is scrolled to show any
part of the element. An element also enters the viewport if it was
hidden or collapsed
and is then shown or expanded in the viewable part of the current window. onViewportEnter()
is not fired for hidden or collapsed
elements even if they are scrolled into view.
You can also define an event handler using the Properties and Events panel.
Authorization
Request
This endpoint does not take any parameters
Response Object
The element on which the event is now registered.
Returns an empty object.
Status/Error Codes
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Get the ID of the element that has entered the viewport
Copy Code
1$w("#myElement").onViewportEnter( (event) => {2 let targetId = event.target.id; // "myElement"3});