Hara Vamsi

I'm. I have completed my degree in 2020 in stream in BSE. After completing my degree, I have joined in, you know, IT Services in 2020 and started my career as a front end developer in Angular, and I have managed my graduation by handling my professional career in parallel. Okay? It's been 4 plus years I have started my professional career. I have learned different technologies like Angular, TypeScript, JavaScript, HTML, CSS, unit testing, and prompt engineering. Coming to my positives, I'm always eager to learn new things and adapt to my enrollment. In short, this is all about me. Thank you.

What steps would you take to integrate a rest full API with an angular application? Okay. Set up an Angular project by click and create new Angular project. If you haven't already using Angular CLLI, we have to use NG new my app. Then the new application has been installed. Install his then after that, install HTTP client module. Angular provides that HTTP client module for making HTTP request. Install it by running. Next, create a service, like using to encapsulate API cells. This helps keep Angular CLI to generate a service. After that, we have to implement API cells. Inside your service, use the HTTP client module to make HTTP requests to your RESTful API. For examples, they have a lot to say that after that injecting services into your comp computer where you want to use it API data. Then call the service methods to fetch or send data from doing the API with your computer component. Handle responses like approximately in your component whether it is displaying data to the user, like error handling or other operations. After the test share handling handling is working as expected. After that, we have optimized the API cells by implementing features like catching, lazy loading, or interceptors for request response manipulation. That's it.

What strategy would you follow to unit test a service in angular that has multiple dependencies involved in several steps to ensure comprehensive text coverage and reliable results. First, you have to identify the dependencies like understanding which dependencies your service relies on. This could include other services components modules or external services and another thing we need to work on mock dependencies for unit testing you should insulate the service under test by mocking its dependencies use angular testbed configure testing modules method to provide mock implementations for each dependency and we have to inject dependencies to mock dependencies into the service being tested this can be done using angular dependencies injection mechanism within the testbed.configuration test module method after that we have to test the each individual method for each method or function in the service ensure that you cover all possible exactuation paths including error handling and edge cases arrange act assert pattern like we have to follow the method and act asset pattern for each test case arrange the preconditions performs the action being tested and then asset the expected outcomes we have to use jasmine or zest for this angular typically uses jasmine or zest for writing unit tests familiarize yourself with the syntax and capabilities of these testing frameworks to effectively write your test cases after that we have to test the dependencies if your services interacts with the dependencies requests or subtracting to ensure that your test interactions as well mock HTTP requests or observables to simulate different scenarios and responses that's it

Explain you preferred method for managing state in a complex angular application. K. In complex Angular application, managing state efficiency is crucial for maintaining a clean, maintainable code base. My preferred method for using in combination of services like RxCS and Angular built in mechanisms like observables and subjects. Here's an overview for some approach works, like services for state management. Create services dedicated to managing specific areas of state with your application. These services act as singletons providing a centralized locations for storing and modifying state data. And with these services, we use either behavior subjects to replay subject from RxCS to store and manage the state. Behavior subject holds the current value and embeds it to the new subscribers. Immediately, while replying subject, we can buffer and reply and specify a number of values. In mobile data, whenever modifying the state, follow the principle of immutability. And instead of directly morphing the state, create a new state object and emit in using the behavior subject, replace object. Expose or rules like status observables from the services. This allows components to subscribe subscribe to changes in the state and react accordingly. Component interactions like inject these services with subscribe to the state and absorb who they can also call methods provided by the services to the modified to the state. Unsubscribing also remembers to observables when the components are described to avoid, um, Relix Angular provides life cycle hooks like n g on display of this purpose. Effect handling and testing, where unit testing for your services to ensure that the state management functionally works as exceptional mock dependencies such as HTTP clients for isolated testing. That's it.

Describe the method you would use to create custom form validators in Angular. Describe the method you would use to create custom form violators in Angular. To create a custom form validator in handler, you can follow these steps, like creating the validator function like a TypeScript function that implements the validation logic. This function should accept the inform control object as input and return either null if the validation passes or if it that validation errors if it fails. Implementing the validator directive. Create an common Angular directive to use the validator function. This directory should be decorated with a direct directive and configured to mix as validator using the validator's API. After that, we have to register the validator's director. Add the custom validator directive to the declarations area of the engine model where it should be used. This makes the directive available for use in templates. Use the validator directive. Apply the custom validator directive to the form control for group in the template where validation is needed. This is typically done by adding the directive surface to the form control directives array or using it as an attribute on the form control element. Have a lot of examples. That's it.

How would you implement a feature that requires dynamic theming in an Angular app application? How would you implement a feature that requires them teaming in an Angular application? Okay. Implementing dynamic theming in an Angular application involves allows users to select power switch between different themes, like examples how light mode, dark mode at running time. Here is in general approach for implementing some features like theme services. Create a service responsible for managing the application. These services will hold the currently selected theme and provides purpose for changing it. Defining some theme options like defining the available theme options in your application. This could include defining different color, palettes, typography settings, and other style related properties for each theme. CSS variable or assess these variables to define theme specific styles defines these variables in your global CSS file or in theme specific CSS file. After toggling a theme with implementing a mechanism for the user to toggle between different themes, this would be through a setting menu, a button, or any other interface element. Updating styles dynamically when the user select in different theme, update the CSS variable or SCSS variable dynamically based on the theme selected one using the team services. Optionally, you can apply team specific classes to specific elements in your application templates based on the selected theme. This allows for your granular control over styling. This is on preference. It decide basis the user selected theme preference in local storage or in cookies so that it persists across sessions. We have simplified examples for it.

Okay. Adhering to this solid principles here creates maintainable, scalable, and flexible applications. Here, how each solid principle can be applied, Like, single responsibilities principles called SRAP, each angular components, services, directives, or modules should have a single responsibility. For components, this means separating concerns such as UI rendering, data manipulation, and business logic. Services should focus on specific tasks such as data fetching, authentication, or error handling rather than trying to do too much. Applying SRP leads to more modular and reusable codes, making it easier to understand test and maintenance. Open and close to principles. Angular encourages using dependencies injections to make components and services. The code should be placed according to the described features.

Okay. After inspecting this Angular method that we have to handle HTTPZET request. Yep. I'm explaining a potential issue with the usage of RxCS operators. Like, we have some of examples with us, actually. I'm thinking to make it come from the insect. The code has 2 error handlers. 1 should be the present, either the top one or below 1. Catcher is enough to handle the errors.

In what way would you use RxJS to manage a synchronous data flow in an Angular application? Okay. An Angular application, RxJS, is commonly used to manage asynchronous data flow, especially when dealing with HTTP request user interactions and other asynchronous operations. Here are some common ways. RxJS is used for managing the synchronous data flow in. HTTP request uses RxJS operate operators like switch map, catchers, etcetera, to handle HTTP requests and responses. And we have user input and the event. We use our XDS observables to handle user input and events in anger components. And we by managing this, use RxJS subject as behavior subjects to manage application state and share data between components. A sync pipe uses angular sync pipe with observers in templates to automatically subscribe and unsubscribe from observable streams on handling errors using RxJS operators like catch error and retry to handle handle errors in asynchronous operations, for example. By using RxJS in these ways, Angular developers can effectively manage synchronous data flow in your application.

What pattern would you use in JavaScript to encapsulate private properties and methods? In JavaScript, you can achieve encapsulation of private properties and methods using the model patterns of the prevailing modules. These patterns here, how each pattern works, model patterns. The model pattern uses clauses to create private variables and functions. It involves creating an outer function and returns to an object that contains the public methods Mhmm. And properties. Keep keep the private members in in actionable from the outside the module. Private met private members are defined within the scope of the outer function and as accessible for the outside it. Revealing model patterns, the revising the model pattern is an extension of the model pattern. Instead of directly retaining an object with public members, it reveals the necessary public members by retaining an object literal or assigning them to a public variable. This pattern makes it clear which members are Internet to public improving coding reliability. Both patterns offer a way to encapsulate and private members in JavaScript, allowing you to control access to them and promote better core organization and maintainability.

What would be your approach to handling expectations globally in an Angular application? What would be your approach to handling expectations globally in your Angular application? It might be me. Handling expectations globally in an Angular application is crucial for providing a consistent user experience on managing error effectively. Here is my approach to handling expectations globally in an Angular application. 1st, we have 2 error interceptors implementing an interceptor to catch errors for HTTP request globally. This interceptor can catch errors such as HTTP status codes 4 x 65xx. Blob error handler implements and Blob error handler to catch unhandable errors and expectations. Throughout the application, this handler can be used to lower errors, display user friendly error message, or perform other error handling tasks. Providers configurations, the error interceptors, and global error handlers in the provider array of your app module to make them available throughout the application. For specific error scenarios or custom expectations implementing additional errors handling loss are needed throughout your application. By implementing these steps, you can effectively handle exceptions globally in your Angular application, ensuring a consistent and reliable user experience also.