Nihilent Angular Frontend Developer Interview Questions and Answers

Q1. What are AOT and JIT in Angular?
Ans. 
AOT and JIT are compilation techniques in Angular.
• AOT (Ahead-of-Time) compilation is done at build time, converting TypeScript and HTML code into efficient JavaScript code before the browser runs it.

• JIT (Just-in-Time) compilation is done at runtime, converting TypeScript and HTML code into JavaScript code while the application is running.

• AOT improves performance by reducing the size of the bundle and optimizing the cod...read more
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Q2. Observables vs promises
Ans. 
Observables are streams of data that can be subscribed to, while promises are a single future value.
• Observables can handle multiple values over time, while promises can only handle a single value.

• Observables are cancellable, while promises are not.

• Observables support operators like map, filter, and reduce for data transformation.

• Promises have a simpler API with just then and catch methods.

• Observables are lazy, meaning ...read more
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Q3. What is data binding and types?
Ans. 
Data binding is the automatic synchronization of data between the model and view components in an application.
• Data binding allows for the seamless updating of data in the model and reflecting those changes in the view without manual intervention.

• There are two types of data binding in Angular: one-way binding and two-way binding.

• One-way binding updates the view when the model changes, while two-way binding updates both ...read more
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Q4. What is closure?
Ans. 
Closure is a function that has access to its own scope, as well as the scope of its outer function.
• A closure allows a function to access variables from its outer function even after the outer function has finished executing.

• Closures are commonly used in JavaScript to create private variables and functions.

• Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction() { console.log(oute
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Q5. Lazyloading in angular
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Lazy loading in Angular is a technique used to load modules only when they are needed, improving performance.
• Lazy loading helps reduce initial load time by loading modules on demand

• Implemented using loadChildren property in routes configuration

• Lazy loaded modules have their own routes and components
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Q6. Directives in Angular and Types
Ans. 
Directives in Angular are markers on a DOM element that tell Angular to attach a specified behavior to that DOM element or transform the DOM element and its children.
• Directives are used to create reusable components in Angular.

• There are three types of directives in Angular: Component, Structural, and Attribute directives.

• Examples of directives include ngIf, ngFor, and ngStyle.
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Pagination task and filter table data

Q1. Angular Basic Concepts interceptor,Observable,AuthGuard
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Q1. Java script basics
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Q2. Angular basics questions
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Technical questions and live coding questions with medium difficulty

Q1. First is telephonic round it was friendly and co-operative interview process. 1Tell me about yourself 2.What is JavaScript 3.Pure Pipe and Impure Pipe
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Q2. 4.How to create custom Pipe? 5.Directives in angular 6.Binding in angular
Ans. 
Answers to questions related to Angular frontend development
• To create a custom pipe, use the @Pipe decorator and implement the PipeTransform interface

• Directives in Angular are used to manipulate the DOM and add behavior to elements

• Binding in Angular is used to connect the component class with the template

• Examples of binding include property binding, event binding, and two-way binding
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Coding and technical round in which interview ask me to write a function which gives output true when we pass value 5 otherwise returns false; for 2 functions-> 1.Having 2.Available

Q1. Basic of Angular Question
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Q1. Project Info About Salary CTC Structure
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Q1. First is telephonic round it was friendly and co-operative interview process. 1Tell me about yourself 2.What is JavaScript 3.Pure Pipe and Impure Pipe
Add your answer
Q2. 4.How to create custom Pipe? 5.Directives in angular 6.Binding in angular
Ans. 
Answers to questions related to Angular frontend development
• To create a custom pipe, use the @Pipe decorator and implement the PipeTransform interface

• Directives in Angular are used to manipulate the DOM and add behavior to elements

• Binding in Angular is used to connect the component class with the template

• Examples of binding include property binding, event binding, and two-way binding
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Coding and technical round in which interview ask me to write a function which gives output true when we pass value 5 otherwise returns false; for 2 functions-> 1.Having 2.Available

Q1. Basic of Angular Question
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Q1. Project Info About Salary CTC Structure
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Q1. 1. Difference between var, const, let?Difference between var, const, let? 2. Features of ES6? 3. What is Closure in Javascript?
Ans. 
Answers to common questions asked in an Angular Developer interview.
• var, const, and let are used to declare variables in JavaScript

• var has function scope, while let and const have block scope

• const is used to declare variables that cannot be reassigned

• let is used to declare variables that can be reassigned

• ES6 introduced new features like arrow functions, template literals, and destructuring

• Closure is a function that has...read more
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First 100 prime numbers

Q1. What was the Reason for switch?
Ans. 
Switched to Angular for its robustness and scalability.
• Angular offers better performance and scalability compared to other frameworks.

• Angular's modular architecture allows for easy maintenance and updates.

• Angular's extensive documentation and community support make it a reliable choice.

• Switching to Angular also allowed for better integration with other technologies.

• Overall, the decision to switch to Angular was based o...read more
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