Errors and Known Issues for Learning React


A great combination of editors and reviewers help ensure that the book's content is error-free. Sometimes, errors do slip through, and this page calls them out. Do note that we fix these errors in subsequent printings, so you may not run into all of the errors listed below.

This is a companion discussion topic for the original entry at


Minor error in the web edition, Chapter 11, in the “See the Lifecycle Methods in Action” section, the URL to the example is rendered with a space. Here’s the original: lifecycle_example.htm
And here’s how it should be:


Thanks for pointing it out. I have updated it on the errata location: :slight_smile: