PageTransitionEvent.md

PageTransitionEvent

Namespace: SpawnDev.SpawnJS.JSObjects
Inherits: Event
Source: JSObjects/PageTransitionEvent.cs
MDN Reference: PageTransitionEvent on MDN

The PageTransitionEvent event object is available inside handler functions for the pageshow and pagehide events, fired when a document is being loaded or unloaded. https://developer.mozilla.org/en-US/docs/Web/API/PageTransitionEvent

Properties

Property	Type	Access	Description
Persisted	bool	get	Indicates if the document is loading from a cache.

Examples

SpawnDev.SpawnJS Mapping Note: The JavaScript examples below show the standard Web API usage. In SpawnDev.SpawnJS, the same API is available with C# conventions:

• Properties and methods use PascalCase (e.g., readyState becomes ReadyState)
• Events use ActionEvent with +=/-= (e.g., addEventListener("click", fn) becomes OnClick += handler)
• Async methods return Task<T> instead of Promise<T>
• Objects should be disposed with using statements
• Access via JS.Get<PageTransitionEvent>(...) or constructor new PageTransitionEvent(...)

window.addEventListener("pageshow", (event) => {
  if (event.persisted) {
    alert("The page was cached by the browser");
  } else {
    alert("The page was NOT cached by the browser");
  }
});

See full example on MDN