Datamatics Global Services Front end Web Developer Interview Questions and Answers

Q1. Caching Strategy
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Q2. What is micro Frontend architecture
Ans. 
Micro Frontend architecture is an approach to building front-end applications by breaking them down into smaller, independently deployable units.
• Allows different teams to work on separate parts of the application

• Each micro frontend can be developed using different technologies

• Enables incremental upgrades and updates without affecting the entire application

• Can improve performance by loading only the necessary components

• ...read more
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Q3. Pure and impure pipes in angular
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Pure pipes in Angular are stateless and do not change the input data, while impure pipes can have side effects and change the input data.
• Pure pipes are used for simple transformations like formatting dates or numbers.

• Impure pipes are used for more complex transformations that require state or side effects.

• Pure pipes are faster and more efficient as they only run when a pure change to the input data is detected.

• Impure p...read more
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Q4. How to make singleton services multiton
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Singleton services can be made multiton by maintaining a map of instances with unique keys.
• Create a map to store instances with unique keys

• Use a factory method to retrieve instances based on keys

• Ensure that only one instance is created per key
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Q5. What is dependency injection
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Dependency injection is a design pattern where components are given their dependencies rather than creating them internally.
• Allows for easier testing by injecting mock dependencies

• Promotes loose coupling between components

• Improves code reusability and maintainability

• Examples: AngularJS, Spring Framework
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Worst set of questions

Advanced DSA for entry level role

Q1. Javascript features and advance level coding
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Q2. React with typescript, Test case
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React with TypeScript and test case integration for ensuring code quality and functionality.
• Use Jest and Enzyme for writing test cases in React with TypeScript.

• Utilize TypeScript's static type checking to catch errors early in development.

• Mock external dependencies in test cases to isolate components for testing.

• Ensure test coverage for all components and functions in the codebase.

• Use tools like React Testing Library f...read more
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Q1. What is your experience?
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Q2. What are closure
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Closures are functions that have access to variables from their containing scope even after the scope has closed.
• Closures allow functions to maintain access to variables from their parent function even after the parent 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 innerFu
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Q3. Closure meaning how to implement
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Closure in programming refers to the ability of a function to access variables from its parent scope even after the parent function has finished executing.
• A closure is created when a function is defined within another function and the inner function references variables from the outer function.

• Closures are commonly used in event handlers, callbacks, and asynchronous programming.

• Example: const outerFunction = () => { co...read more
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Q4. Html implementation in angular
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HTML can be implemented in Angular using templates and data binding.
• Use Angular's template syntax to include HTML in components

• Utilize data binding to dynamically update HTML content

• Example:

  {{ variable }}
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Q1. Tell me about yourself
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Develop web site with any stack

Q1. Basics of HTML, CSS, JS and React
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2 question 1 easy 2 medium dsa

2 codes of dsa and mcq.

Q1. Code paring round
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Q2. Dsa question of graph
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Q1. Why you best fit for this role
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Q2. What's best qualities in you
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