collapse( )

Collapses the element and sets its collapsed property to true.

The collapse() function returns a Promise that is resolved when the element's collapsed property has been set to true.

To learn about the behavior of a collapsed element, see the collapsed property.

You can also collapse an element when the page loads by using the Properties and Events panel in the Editor.

Note: The collapse() function doesn't remove elements from the DOM. To soft delete an element from the DOM, use the delete() function.

Method Declaration
This method does not take any parameters
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