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The latest version of the book is P1.0, released 29 days ago. If you've bought a PDF of the book and would like to update it to this version (for free), visit your home page.

By default this page displays the errata for the latest version of the book. If you have a previous version, select it here:

If you've found a new error, please submit it.

  • Typo
  • Tech. error
  • Suggestion
  • Maybe next edition
  • Not a problem
  • Reported in: B2.0 (26-Dec-18)
PDF page: 62
Source snippets can come with line numbers and syntax highlighting - there are online libraries that can do this in html, maybe use one of them in the...more...
  • Reported in: B3.0 (19-Feb-19)
PDF page: 73
For those, like me, who don't know js/node/npm at all, it would be great to add the instructions for installing webpack, webpack-dev-server and html-w...more...
  • Reported in: B4.0 (08-Mar-19)
Paper page: 103
The book says p112 app is served at /wasmchat.js but the index.html in the code given online and earlier in the chapter links js/app.js which is depre...more...
  • Reported in: B4.0 (08-Mar-19)
PDF page: 109
Paper page: 97

Only js! macro is defined by stdweb, html is defined by yew.--Nicolas Barrandon