Jeena Thomas

I'd be happy to help you understand about my background. Yes, I'm Sheena. I'm from Kerala, and I completed my Master of Computer Application in 2020. I have three years of experience. It's my second company, MIO2, where I've been working for three years, and my skills are in ReactJS and React Native. I can handle both web and mobile applications, and I've done three projects in my career: Head Coach, Build Connect, and Cruise Trip. Head Coach is an emotional intelligence tracking application for coaches and players, where coaches can track their players' emotional intelligence and habits, and get reports on their well-being through analysis. In Head Coach, I worked as a mobile application developer. In Build Connect, I worked as both a mobile application developer and a web application developer. The project is a construction management platform that facilitates communication between builders and owners. Builders can communicate with owners through the application, and owners can get updates on their construction progress, view images, and choose materials. Owners and builders can also communicate and message through the application. Another project is Cruise Trip, a data analytical platform where organizations can create and analyze their data, track their progress, and so on. That's about myself.

Can you outline the process of lifting up state in React? Yeah, lifting up state means that the parent component as well as the child component have access to the state. The state inside the child component can be used in the parent component and can be shared among other components. This process is lifting state from the child component to the parent component. In this process, the state from the child component can be used inside the parent component. So, the state is lifted up, and this process is called lifting up state in React. We can access the child component's state inside the parent component. Also, we can share the state among other components.

React Context API in conjunction with React Native or for global state management. Yeah, React Context API, in conjunction with the React API, provides a way to share data between components. We can access the state globally. We can access the state in a global way. For example, consider a parent component and a child component. We can pass the state to the child component, and then to its child components, and so on. That process is called prop drilling. We can avoid prop drilling with the help of this context API. Context API can provide the state. We can access that state throughout the application without needing to pass props. We can just access the context inside the components by using the `useContext` hook. And we create the context with the help of the `createContext` function. We just wrap the application with the `Provider` component, passing the context data to it. And we can access this context by using `useContext`.

What are the major differences between class components or functional components? Yeah, class components mean that class components are a stateful component. Class components condense their own states as well as the life cycle methods. And class components condense the constructor as well as their own state. But in functional components, functional components are stateless. And in functional components, the state can be, it doesn't contain any state or life cycle methods. In functional components, these life cycle methods and state can be achieved with the help of hooks. With the help of hooks, we can achieve the state and life cycle methods in functional components. For example, use state. By using the use state hook, we can create the state and as well as we can modify the state. And by using the useEffect hook, we can implement the life cycle methods in functional components. Like mounting, unmounting, and updating phases can be implemented with the help of this useEffect hook in functional components. But in class components, life cycle methods and state are already built-in with the this in class components, the state can be constructed with the help of the constructor. Yeah, that's it.

How do you integrate React with an existing REST API? Yeah. A REST API can be integrated with React with the help of Axios. Access is a way to provide communication between the server and the client. With the help of Axios, we can communicate with the server and the client. Also, we can use data. We add query parameters and the API returns the results, and we can access the results in the application. Or else we can use the context API or Redux to call asynchronous functions in our React application and access the results. Yeah. In my project, we are using products to integrate the REST APIs. And with the help of that product, saga in Redux, we are writing asynchronous calls inside the reducers and introducing them as a generator. We are using generator functions. And generator functions can handle asynchronous code.

What approach do you take to debug the performance of a React Native Android app? Okay, React Native Android app. In React Native, Android React Native apps, we can debug performance issues with the help of any debug tools. Yeah, to debug performance issues in Native, we can use either Flipper or React Native dev tools. Or Chrome dev tools can be used for debugging purposes. Also, Flipper, or React Native tools, can provide different types of features, such as network calls, or you can integrate Redux flow if you are using Redux. Also, with the help of console logs inside the application, you can trigger debugging.

In this CSS snippet, certain styles are not being applied as expected. Okay, what do you issue? How might CSS cascade and specify the rules be affecting? I think dot my container means that dot indicates the name of the class component. I think we are not using any hyphen inside the naming of either a class proper either the class name or for the ID. We are not using any underscores or hyphens inside. We can use either camel case or we can use underscores. And in that case, I'm not sure. But yeah, the color is red, but it's not in a single card. Just like a red is a string. Also blue is a string. So either it can be put inside the string, it can be used. That's correct.

given the react snippet can you identify why a given might not be re-renders aspected the it state updated cannot be it might not be re-rendering as expected okay first of all I'm not that much aware but I'm not that used to class components I have used the functional components while I need just to try the constructor can be used to define the state it can be executed I'll be mounting face and in here we are using increment count increment count and this total state don't count plus equal to one increment the state count itself this increment re-rendering as much when it when the state is updated this increment is a button yeah when we click on this increment in this case I think in the updating phase it provides some classes should component update or should component data update inside that function we need to write the increment count to update when the state changes in function in the case of functional components we can provide it inside the use of it hook or something else or we can use callback to render the state

The role of virtual DOM is the document object model. The DOM is the document object model, and it's a tree-like representation of HTML elements. In DOM, the virtual DOM. Virtual DOM means it's exactly the same as the real DOM, but it's a copy of the real DOM. If any changes are made inside the DOM, first, they check with the virtual DOM and the previous state of the virtual DOM. Then, they compare the virtual DOM and the previous state of the virtual DOM, and combine each node to find out whether any changes have been done in any specific node. It finds the node that's being changed, and updates the real DOM with data. Only the change that happened in that node is updated. Instead of updating the whole node, only the node that needs to be changed will be updated. So, the performance will be higher, as well as the loading time. The loading time is faster, and we can easily get the updated UI. The UI will be rendered easily, and when there are any proposed state changes inside the UI in a React application.

To effectively replace Webpack and its project building, K. Webpack is the Webpack, which means it is the compiler for React applications. And Webpack is the package that can convert code with respect to browser compatibility. Babble can convert the JS code. The package to compile for the React application is Babble. It combines the JS code to the corresponding web applications. That's it.

How do you implement the animation? Animations of React Native can be implemented with the help of React Native Reanimator. Yeah. React Native Reanimator is a package that provides different types of animations. It's a best package that we can use, and it provides different classes and different functions to which we can use to generate the animations.