This was an extremely lengthy round, lasting over 3 hours. They inquired about the fundamentals of react js, such as lifecycle methods in classes and function components. Class versus function component: which should be utilized when? React application flow What is the difference between component, Did Mount, and componentDidUpdate, and what is the alternative in the function component? Then in the Screen share session: The interviewer requested that I screen share and that I collect data from the API and present it as an accordion. (Not React JS, but to test the fundamentals of HTML and CSS) & free bootstrap Furthermore, They inquired about HTML fundamentals such as html5 tags and CSS fundamentals. Centering a div - Flexbox Pseudo class / Pseudo element query 4. Javascript fundamentals -> callback, result of 5 + "5", arrow function, this behaviour, objects Object question (What happens when an object is transferred to a second variable and one of them is modified? Is the other one modified?)