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Jio Platforms Front end Developer Interview Questions, Process, and Tips
Top Jio Platforms Front end Developer Interview Questions and Answers
- Q1. Write code for promise and explain. Write html form from scratch for js. Coding questions related to array
- Q2. Write react component code for use memo use callback
- Q3. Write code for promise
Jio Platforms Front end Developer Interview Experiences
2 interviews found
I applied via Referral and was interviewed in Apr 2024. There were 2 interview rounds.
Machine code test related to javascript and mcq questions from output based
(5 Questions)
- Q1. Write code for promise and explain. Write html form from scratch for js. Coding questions related to array
- Ans.
Answering coding questions related to promises, HTML forms, and arrays.
Promises in JavaScript are used for asynchronous programming. They represent a value that may be available now, in the future, or never.
Example of a promise code snippet: const myPromise = new Promise((resolve, reject) => { setTimeout(() => { resolve('Promise resolved'); }, 2000); });
HTML form can be created using
- Q2. Write code for promise
- Ans.
A promise is an object representing the eventual completion or failure of an asynchronous operation.
Create a new promise using the Promise constructor
Use the resolve and reject functions to handle the success or failure of the asynchronous operation
Chain .then() and .catch() methods to handle the resolved or rejected promises respectively
- Q3. Write react component code for use memo use callback
- Ans.
React component code using useMemo and useCallback
Use useMemo to memoize a value and useCallback to memoize a function
Example: const memoizedValue = useMemo(() => computeExpensiveValue(a, b), [a, b]);
Example: const memoizedCallback = useCallback(() => { doSomething(a, b); }, [a, b]);
- Q4. Create own filter method
- Ans.
Custom implementation of filter method for arrays
Create a function that takes an array and a callback function as parameters
Iterate through the array and apply the callback function to each element
If the callback function returns true for an element, add it to a new array
- Q5. Create pagination work flow
- Ans.
Pagination work flow involves dividing content into pages for easier navigation.
Determine total number of items to be paginated
Calculate total number of pages based on items per page
Display page numbers for navigation
Allow users to navigate to previous and next pages
Update content based on selected page number
Skills evaluated in this interview
(1 Question)
- Q1. What is closure, Polly fill for reduce, guess the output questions, some programs based on strings
Interview Preparation Tips
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Interview questions from similar companies
Navin Kumar
I applied via Approached by Company and was interviewed in Sep 2024. There was 1 interview round.
(5 Questions)
- Q1. Discussion about my previous project
- Q2. Question on html, css, javascript & react
- Q3. Explain about promises
- Ans.
Promises are objects representing the eventual completion or failure of an asynchronous operation.
Promises are used to handle asynchronous operations in JavaScript.
They can be in one of three states: pending, fulfilled, or rejected.
Promises can be chained using .then() to handle success and .catch() to handle errors.
Example: const myPromise = new Promise((resolve, reject) => { ... });
- Q4. Use state, context api
- Q5. Box modelling in css, css pre processors
- Ans.
Box model in CSS refers to the way elements are rendered in a web page. CSS preprocessors like SASS or LESS help streamline CSS development.
Box model in CSS includes content, padding, border, and margin.
CSS preprocessors like SASS or LESS allow for variables, nesting, and mixins to be used in CSS.
Example: box-sizing: border-box; in CSS changes the box model to include padding and border in the element's total width and
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via Naukri.com and was interviewed in Aug 2024. There was 1 interview round.
(2 Questions)
- Q1. Angular life cycle, angular loading and some scenarios about authentication
- Q2. Javascript out put based questions based on it's execution
Selected
I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
(5 Questions)
- Q1. Caching Strategy
- 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
...
- Q3. Pure and impure pipes in angular
- Ans.
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...
- Q4. How to make singleton services multiton
- Ans.
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
- Q5. What is dependency injection
- Ans.
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
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in May 2024. There was 1 interview round.
(2 Questions)
- Q1. CSS Box-model definition
- Ans.
CSS Box-model defines how elements are rendered in a webpage, including padding, border, and margin.
Box-model consists of content, padding, border, and margin
Content area is where text or images are displayed
Padding is the space between content and border
Border is the line around the content and padding
Margin is the space outside the border
- Q2. Difference b/n flexbox and grid
- Ans.
Flexbox is for one-dimensional layouts, grid is for two-dimensional layouts.
Flexbox is best for arranging items in a single row or column.
Grid is best for creating complex layouts with rows and columns.
Flexbox is more suitable for smaller scale layouts, while grid is better for larger scale layouts.
Flexbox is more flexible in terms of item order and sizing, while grid provides more control over the overall layout.
Both
Skills evaluated in this interview
2 question 1 easy 2 medium dsa
2 codes of dsa and mcq.
(2 Questions)
- Q1. Code paring round
- Q2. Dsa question of graph
Selected
I applied via Job Portal and was interviewed in Apr 2024. There were 2 interview rounds.
All the basic topics
Normal JS, And CSS and HTML
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Jul 2023. There were 2 interview rounds.
(2 Questions)
- Q1. Asked about basic javascript and react questions
- Q2. Give some code and asked result
Front end Developer Interview Questions & Answers
Hexaware Technologies
Anonymous
posted on 18 Feb 2024
I applied via LinkedIn and was interviewed before Feb 2023. There were 3 interview rounds.
It was easy not that hard
Coding question were on medium level
(1 Question)
- Q1. Be prepared for project question
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