Showing content from https://webplatform.github.io/docs/dom/PopStateEvent below:
PopStateEvent · WebPlatform Docs
PopStateEvent Summary
Fires when a history entry changes.
Inherits from EventEvent
Properties
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state
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The current history entry’s state object (if any).
Methods
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initPopStateEvent
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Initializes the properties of a PopStateEvent.
Events
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popstate
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An event handler that is fired when changes are made to the active history. Calls to pushState or replaceState can trigger this event.
Inherited from Event Properties
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bubbles
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Gets a value that indicates whether an event propagates up from the event target.
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cancelable
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Gets a value that indicates whether you can cancel an event’s default action.
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currentTarget
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Gets the event target that is currently being processed.
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defaultPrevented
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Gets whether the default action should be canceled.
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eventPhase
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Gets the event phase that is being evaluated.
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isTrusted
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Gets a value that indicates whether a trusted event source created an event.
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target
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Gets the element that is the original target of the event.
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timeStamp
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Gets the time, in milliseconds, when an event occurred.
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type
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Gets the name of an event.
Methods
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initEvent
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Initializes a new generic event that the createEvent method created.
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preventDefault
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Cancels the default action of an event, if possible.
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stopImmediatePropagation
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Prevents any further propagation of an event.
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stopPropagation
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Prevents propagation of an event beyond the current target.
Events
DOMContentLoaded
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afterprint
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afterupdate
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beforeactivate
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beforecopy
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beforecut
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beforeeditfocus
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beforepaste
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beforeprint
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beforeunload
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beforeupdate
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bounce
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cellchange
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change
:
contextmenu
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controlselect
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copy
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cut
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Fires after a data selection is cut to the clipboard.
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dataavailable
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Fires when new data at a data source becomes available.
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datasetchanged
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Fires when content at a data source has changed.
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datasetcomplete
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Fires when data transfer from the data source has completed.
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deactivate
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Sets an active version of an object to not active.
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error
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Fires when an error occurs.
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errorupdate
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Executes any error handling associated with the event.
filterchange
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finish
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Examples
window.onpopstate = function(evt) { document.write("location: " + document.location + ", state: " + JSON.stringify(evt.state)); };
Usage
Used, for example to prevent back navigation to a login page after the user has already logged in.
Notes Remarks
A pop state event is dispatched to the window object every time the active history entry changes. To read the current history entry immediately, invoke history.state.
Related specifications
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The History Interface
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Recommendation
Attributions
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