Lightning Aura Components Developer Guide
jNote: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.
removeMessageHandler()
Unmounts the message-handling function.
When using React, it’s necessary to unmount functions to remove them from the DOM and perform necessary cleanup.
Sample
Used within a JavaScript app uploaded as a static resource and referenced by lightning:container, this example unmounts a message handling
function.
1componentWillUnmount() {
2 LCC.removeMessageHandler(this.onMessage);
3}Arguments
| Name | Type | Description |
|---|---|---|
| handler: (userMsg: any) => void | function | The function that handles messages sent from the Aura component. |
Response
None.