In this appendix, we learned more about how OpenLayers works but before anything, we learned more on how to use Chrome DevTools.

We then took a look at the panels that Chrome DevTools provides and what they are used for. Afterwards, we spent time with the Console panel—something you'll be making extensive use of throughout this book (and when you're developing your own web maps). Then, we reviewed how to improve default Chrome DevTools. Finally, we covered basically main other web debuggers with cross-browsers support in mind.

This appendix aimed to provide some fundamental knowledge of web development tools for getting into both OpenLayers and general web development. Web development tools, such as Chrome DevTools, are one of the biggest assets in our toolkit. They speed up development time, help us identify bugs, interact with our code better, and much more.