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React Interview Guide
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This chapter covered a list of advanced concepts that you might encounter in a ReactJS interview. We began by covering new features such as portals, which handle modal windows, error boundaries, which prevent the app from crashing due to errors, and the Suspense feature, which displays an alternative UI for heavily time-consuming background tasks. After that, we covered topics related to concurrent rendering, which supports features that improve the rendering performance, followed by the Profiler API, which can be used to detect the rendering cost of specific parts of an application.
Then, we discussed development-only features such as strict mode and static types, which help us avoid any possible bugs and errors encountered in the code. Finally, we introduced React in mobile environments and React Native and its differences with ReactJS, as well as its internals and rendering architecture.
Throughout this chapter, we have helped you learn advanced concepts, their significance...