Lightning Components Developer Guide

What is the Lightning Component Framework?
Quick Start
Creating Components
Using Components
Communicating with Events
Creating Apps
App Overview
Designing App UI
Creating App Templates
Developing Secure Code
Validations for Lightning Component Code
Styling Apps
Using JavaScript
JavaScript Cookbook
Using Apex
Lightning Data Service
Lightning Container
Using a Third-Party Framework
Lightning Container Component Limits
The Lightning Realty App
lightning-container NPM Module Reference
addMessageErrorHandler()
addMessageHandler()
callApex()
getRESTAPISessionKey()
removeMessageErrorHandler()
removeMessageHandler()
sendMessage()
Controlling Access
Using Object-Oriented Development
Using the AppCache
Distributing Applications and Components
Debugging
Fixing Performance Warnings
Reference
PDF

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removeMessageErrorHandler()

Unmounts the error 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 error handling function. In a React app, functions must be mounted to be part of the document-object model and rendered in the output.
1componentWillUnmount() {
2  LCC.removeMessageErrorHandler(this.onMessageError);
3}

You can view and download this example in the Developerforce Github Repository.

Arguments

Name Type Description
handler: (errorMsg: string) => void) function The function that handles error messages encountered in the messaging framework.

Response

None.