React.JS Mock Interview | Part 2 | React.JS Technical Interview Questions

Part 2 of the React.JS Mock Interview takes a look at some more questions that get asked in a technical React.JS interview. Watch the video to understand the concepts you must brush up on before sitting for a React.JS test and interview. Let us know in the comments below which tech stack you'd like us to cover next.

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[superprikolist]

I'm wondering whether he had known questions before he was asked, because what is the percent that some random react developer will know all the new features of React 18 and how to migrate from react 17 to 18 ? by coincidence I'm migrating our applications in my job to react 18 and I still don't remember the new features and differences in code... isn't that some thing that you do just once in a year or two and just forget about that ?

[adeniranolukanni]

One of the ways to optimize react performance is to add a dependency list to useEffect which is the functional component equivalent of shouldComponentUpdate lifecycle method of class components.
Also, another great way is to always clean up in side effect hooks like useEffect.
These were mentioned not in the answers.
Thanks a lot for this great video 😊

[ripator]

Regarding the key architecture difference between React and Angular, I'd also add that React follows a component-based architecture, where the application is broken down to smaller, reusable components. Whereas, Angular follows a model-view-controller (MVC) architecture where the application is divided into 3 main components: the model (data), the view (UI) and the controller (manages data flow between the view and the model).

[cugal]

Hi great video. I am struggling to find part 1. Can you please add the link. Thanks.

[ashish]

Can we have more such mock interview videos in future?

[marcosl]

In my opinion this is more like a Junior mock interview, definitely not Senior.
When the interviewee talked about the shouldComponentUpdate lifecycle, this was replaced by React.memo, where you have access to prevProps and nextProps to dictate if the component should re-render.

[anonym]

can a fresher graduate signinto turing, if he has right skills

[rohitjoglekar]

You must improve the voice quality of the video