ToggleEvent.md

ToggleEvent

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

The ToggleEvent interface represents an event notifying the user when a popover element's state toggles between showing and hidden. https://developer.mozilla.org/en-US/docs/Web/API/ToggleEvent

Constructors

Signature	Description
ToggleEvent(SpawnJSObjectReference _ref)	Deserialization constructor

Properties

Property	Type	Access	Description
NewState	string	get	A string (either "open" or "closed"), representing the state the element is transitioning to.
OldState	string	get	A string (either "open" or "closed"), representing the state the element is transitioning from.

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<ToggleEvent>(...) or constructor new ToggleEvent(...)

Basic example

const popover = document.getElementById("mypopover");

// …

popover.addEventListener("beforetoggle", (event) => {
  if (event.newState === "open") {
    console.log("Popover is being shown");
  } else {
    console.log("Popover is being hidden");
  }
});

See full example on MDN