VisualViewport extension type

The VisualViewport interface of the Visual Viewport API represents the visual viewport for a given window. For a page containing iframes, each iframe, as well as the containing page, will have a unique window object. Each window on a page will have a unique VisualViewport representing the properties associated with that window.

You can get a window's visual viewport using Window.visualViewport.

Note: Only the top-level window has a visual viewport that's distinct from the layout viewport. Therefore, it's generally only the VisualViewport object of the top-level window that's useful. For an iframe, visual viewport metrics like VisualViewport.width always correspond to layout viewport metrics like Element.clientWidth.

on
Implemented types

Properties

hashCode → int
The hash code for this object.
no setterinherited
height → num
no setter
offsetLeft → num
no setter
offsetTop → num
no setter
onresize ↔ EventHandler?
getter/setter pair
onscroll ↔ EventHandler?
getter/setter pair
onscrollend ↔ EventHandler?
getter/setter pair
pageLeft → num
no setter
pageTop → num
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
scale → num
no setter
width → num
no setter

Methods

addEventListener(String type, EventListener? callback, [JSAny options]) → void
The addEventListener() method of the EventTarget interface sets up a function that will be called whenever the specified event is delivered to the target.
inherited
dispatchEvent(Event event) → bool
The dispatchEvent() method of the EventTarget sends an Event to the object, (synchronously) invoking the affected event listeners in the appropriate order. The normal event processing rules (including the capturing and optional bubbling phase) also apply to events dispatched manually with dispatchEvent().
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
removeEventListener(String type, EventListener? callback, [JSAny options]) → void
The removeEventListener() method of the EventTarget interface removes an event listener previously registered with EventTarget.addEventListener from the target. The event listener to be removed is identified using a combination of the event type, the event listener function itself, and various optional options that may affect the matching process; see Matching event listeners for removal.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited