Jatin Saini

We have to understand more about your background by giving a brief introduction to yourself. I'm Jonathan, and I'm the lead front-end developer at Onefinet. I manage a team of four people, including myself, who focus on front-end development for our business-to-business and business-to-consumer products. This includes our AI screening platform and a platform for B2B with AI features, such as AI screening and AI job promotion. On the B2C side, I've worked on an AI networking platform, a chat platform, notification systems, and a subscription model for buying platform subscriptions, as well as some events. I'm based in Delhi.

To introduce React components, I'll basically see all the functional approaches I have. All the functional components, all the functionalities we have on PHP, and I'll start by migrating components for that particular flow. I mean, the single functionality, like adding a card, that could be a functionality. That could be restructured into React code. So, by putting bits and pieces of that particular group, one small component at a start. And then updating the whole flow based on the updated components we have in React. That would be the approach I take here to refactor all the PHP code into React. And slowly migrate all the functionalities.

I would refactor a poorly written JavaScript code that's difficult to read and maintain by first seeing all the functionalities, exactly what the JavaScript code is doing. But personally, I prefer to rewrite the code itself as a refactoring process that takes more time than writing the code from scratch. So, that's my general perception on that. But I'll see all the functionalities that are there, all the edge cases that have been taken care of. And I'll see if there are any data leaks, if we're using more variables than required, some empty states. So, I mean, I'll try to refactor it to make it more readable by updating variable names, adding some comments if necessary. But I believe that component names, function names, and variable names will be more than enough to let the developer understand what this code does, instead of adding comments. Comments will be necessary if the code is a little bit more complex. So, I'll basically see through what exactly that code is, and I'll update all the things which are necessary and rewrite the code from scratch to have the same functionality.

Explain the process of creating a responsive or design layout using CSS 3 media queries. So, when using CSS media queries, there are two different approaches I could take. First, there's the mobile first approach and second, there's the desktop first approach. As of now, I have worked on both approaches, but I'll explain the mobile first approach only. As it's true that more users are using mobile devices instead of desktops. So, for mobile first queries, we basically design the CSS for mobile and use media queries. Media queries can define different screen sizes for tablets, desktops, and large screen sizes, including 4K monitors. So, there will be media queries under the CSS code, which is basically updated for tablets, desktops, and large screen sizes. Generally, what I do is wrap the whole website in a component that doesn't go above a certain pixel size, which is 1440 in my case. If we use a bigger monitor, we'll have a larger white space on the left and right of the app, and the app will be centered. So, I'll use CSS, specifically Materialize CSS or other CSS frameworks, which allow us to use variables, or vanilla CSS or CSS preprocessors. I'll create the CSS for mobile and then use media queries for mid-screen sizes, large screen sizes, XL, and double XL. I'll update the CSS based on the screen size and the layout required.

We can optimize React confidence in dealing with complex state logic by using a reducer. This will allow us to create a single state that can handle multiple states, reducing the complexity of our logic. We can create a reducer that defines the states based on a particular case, eliminating the need to handle each state separately. For example, if we were managing three different states for USD, we could use a single reducer to handle all three states based on a condition. Using a reducer provides a single operation to update all states, rather than multiple operations to update each state individually. This approach can help simplify our code and improve performance. Apart from using a reducer, we could also consider using external libraries like Redux, which provides a complex state management system. Additionally, we could use the Context API, which is suitable for smaller-scale applications and also provides a way to manage complex state logic.

What strategies would you implement for state management and arts scale React application? And for street management, I believe there would be a requirement for global state. So for global state, I would introduce Redux as it is really good for large-scale applications. While introducing Redux, I would also consider using local state for local state management, such as some metadata states, storing state, which are sometimes necessary. Apart from that, I would implement Redux for our global state management and also for consuming API responses so that we have access to any API response in any component. So that would be the major goal there.

Analyzing the phone and the logic could not identify the logical error in the effort statement of that may lead to an expected response. It's not even formatted. I must use a resolution. The user is close. Okay. And function check age user and we pass user in that age. And if user.age equals to null or user.age equals to undefined. Okay? Or user.age equals to empty string. Then console.log("H is not provided"). Else, if user.h is less than 18, then console.log("User is not an adult"). 0 admin, 0 admin. So, this word will type of user.age equals undefined. It's written in quotes, which is correct. So if, for any user, the age is not present, it'll say that age is not provided. It will say that it'll go ahead with "User is an undergrad." So, the issue with here is an issue with undefined as it's provided in the codes, as it's a string, not the actual type. So that's the major issue here. Another one is if you provide age as 0, I mean, by default, if you provide it as 0, and I believe there should be another condition for that as the age is not provided. Other than in this case, it is going to say that the user is under that when the age is 0, which doesn't make sense.

Codes will explain the issue as with the current implementation of the user for token, how it might affect the component's performance. So, user from the app and a function use profile user ID, const use, user set user, use statement. Okay. User is a sync function fetch user. Const response equals await fetch API users user ID user ID. Function is defined. Report taken. User ID. User data is equals to fetch use case. We await response to JSON. Async copied with fetch, you know, fetch user. Machine which user. So, there are two things which I believe are issues here. First, one is we're using async/await with fetch, which is not correct as async/await is an alternative to fetch, as it lets call the API synchronously. Apart from that, I believe we are setting the user data in the same useEffect, which is not correct as we are just fetching the user. And, as of now, I believe it will set null to the user and user data will not be updated then. So this particular code will not work correctly. It will always show null or undefined. And so to correct this code, we need to have use.then in this, I mean, without using async/await, we can use.then it'll work. Otherwise, we could use async/await and add another useEffect, so that set user updates only after we fetch the user.

So, I mean, we could use middlewares to handle multiple things, create multiple middlewares. How could you react to this in Huddl? While creating a store, we could also create a middleware, and we could pass that middleware in the store, as with the name of middlewares. And, there's also a middleware which helps in better development. I don't exactly remember the name of that particular middleware, but it helps in the movement mode where we can get all the states of it does all our time frame and the states when it's being updated, all the flow for that update. Yeah. Apart from that, we can also introduce more multiple middlewares like products, things, product saga, which basically allows us to have synchronous API calls or synchronous and not just asynchronous requests or functions, methods, whichever we want to do. So, in React Redux, that is how we create, we can introduce middlewares in a form of Harey. Yes. Synchronous actions, which provides

It's like how you would configure and deploy the other container with the React application to AWS. So, to answer the solution, I mean, I basically configure all my environment variables. I'll be the 1st Docker container inside the Docker container. If there are multiple environments, I'll create 3, let's say, generally, I go ahead with 3 different environments for testing. So, I create 3 different AML, YML files, different containers, which take the code from a particular branch, dev, test, and prod, or main. So we can name any of the branch. So, after having 3 different YAML files, we'll configure all the environment variables which we have in that project, into the AWS Docker container. These are the environment variables required, and also provide those environment variables in the AWS environment for these particular branches to access. Environment variables could be different for different environments, dev, test, and prod. So we could configure that into the AWS and create the container. This Docker container is based on that file, and I'll provide that to AWS whenever all the files are updated. It will follow the set of instructions written down in the container. And, creating a bill, and getting the environment variables from the AWS space. And then, if we have a specific location for build, we can provide that. And then I'll receive it in AWS and deploy it. So, based on that particular container, all the sets of steps will be followed every time we make a change to the code, to the branch. And, those steps will follow, and we'll have updated versions of deployment.

In what ways can Jenkins integrate into the links that include the work we have done using React and PHP together for integration. I'm a little unsure about that, but, I mean, I have, I'll have to see what I believe I'll find, this is something which I can quickly look at and get the answer to. As I believe people are using it, and I'll be able to get what exactly they are doing. And, I will be able to come up with a viable approach that this is what we should do, based on the learning and the things which are present on our different websites. So as of now, I don't know, but I believe it won't be a huge task or huge roadblock for us to do this. I mean, if we are doing this, and I believe I'll get accustomed to it pretty easily.