https://frontendmasters.com/courses/advanced-async-js/q-a-unsubscribe-methods-onerror/
Q&A: Unsubscribe Methods, onError - Advanced Asynchronous JavaScript | Frontend Masters
Jafar answers questions about defining unsubscribe methods and loading the next image when triggering onError.
asynchronous javascriptqunsubscribemethodsonerror
https://www.powerapps911.com/post/power-apps-onerror-to-capture-suppress-and-report-all-errors
Power Apps OnError to capture, suppress, and report all errors
Jul 21, 2024 - Are you tired of your users getting errors in PowerApps? Then check how you can use the OnError property to deal with all of those unhandled errrors. Error...
power appsonerrorcapturesuppressreport
https://tr.javascript.info/onload-onerror
Resource loading: onload and onerror
resource loadingonloadonerror