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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
Anonymous
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.
To create a promise in JavaScript, use the Promise constructor and pass in a function with resolve and reject parameters.
Example: const myPromise = new Promise((resolve, reject) => { // code here });
To create an HTML form in JavaScript, use the document.createElement method to create form, input, and button elements.
Example: const form = document...
- 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
I was interviewed before Dec 2020.
(1 Question)
Round duration - 360 minutes
Round difficulty - Medium
Basically TCS conduct its flagship event named as CODEVITA . And it offers Internship to prefinal (3rd )year students .
- Q1.
Allocate Books Problem Statement
Given an array of integers
arr, wherearr[i]represents the number of pages in thei-thbook, and an integermrepresenting the number of students, allocate all the books ... - Ans.
Allocate books to students in a way that minimizes the maximum number of pages assigned to a student.
Iterate through possible allocations and calculate the maximum pages assigned to a student.
Find the minimum of these maximums to get the optimal allocation.
Return the minimum pages allocated in each test case, or -1 if not possible.
Interview Preparation Tips
Tip 1 : Good understanding of Data Structure and Algorithms
Tip 2 : Be clear in your Core Subjects.
Tip 3 : Do at least 1 good Project .
Tip 4 : Be humble and speak truth .
Tip 1 : Simple and Crisp .
Tip 2 : Do host your project and mention the link in the resume .
Tip 3 : Single Page
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
Interview Questionnaire
3 Questions
- Q1. 1. Basic html schemantics
- Q2. 2. Pure JS
- Q3. 3. Angular advance
Interview Preparation Tips
I applied via Recruitment Consulltant and was interviewed in Jan 2022. There were 5 interview rounds.
(9 Questions)
- Q1. What are your salary expectations?
- Q2. What is your family background?
- Q3. Share details of your previous job.
- Q4. Why should we hire you?
- Q5. Why are you looking for a change?
- Q6. Where do you see yourself in 5 years?
- Q7. What are your strengths and weaknesses?
- Q8. Tell me about yourself.
- Q9. Tell me about your questions
Interview Preparation Tips
Find reverse string using array
(1 Question)
- Q1. What are Routing Guards?
- Ans.
Routing guards are used in Angular to control access to certain routes based on certain conditions.
Routing guards are used to protect routes in Angular applications.
They can be used to control access based on authentication status, user roles, etc.
There are different types of routing guards like CanActivate, CanActivateChild, CanDeactivate, CanLoad.
Example: CanActivate guard can be used to check if a user is authentica
Skills evaluated in this interview
I applied via Job Portal and was interviewed in Aug 2024. There was 1 interview round.
(2 Questions)
- Q1. Difference between foreach and map
- Ans.
foreach is used to iterate over an array without returning a new array, while map creates a new array by applying a function to each element.
foreach does not return a new array, while map does
foreach does not modify the original array, while map creates a new array
foreach is used for iterating over elements, while map is used for transforming elements
Example: foreach - array.forEach(item => console.log(item)), map - ar
- Q2. Explain rxjs operators
- Ans.
RxJS operators are functions that enable complex asynchronous operations and data manipulation in reactive programming.
RxJS operators are used to transform, filter, combine, and create observables.
Operators can be categorized into creation operators, transformation operators, filtering operators, combination operators, and utility operators.
Examples of operators include map, filter, mergeMap, switchMap, debounceTime, a
Interview Preparation Tips
Skills evaluated in this interview
I applied via Company Website and was interviewed before Jan 2022. There were 3 interview rounds.
(3 Questions)
- Q1. What is Event Loop ? How it works?
- Ans.
Event Loop is a mechanism in JavaScript that manages the execution of code and handles asynchronous operations.
Event Loop continuously checks the call stack and the message queue.
If the call stack is empty, it takes the first message from the queue and pushes it onto the call stack.
If the message is a callback function, it is executed and removed from the call stack.
If the message is not a callback function, it is pass...
- Q2. Make a set of 6 boxes Responsive in CSS
- Ans.
Use CSS to make a set of 6 boxes responsive
Use percentage or viewport units for width and height
Use media queries to adjust styles for different screen sizes
Consider using flexbox or grid for layout
Avoid using fixed pixel values
Test on different devices and browsers
Use CSS frameworks like Bootstrap or Foundation for easier implementation
- Q3. Hoisting & Closures Questions
(1 Question)
- Q1. What's your Salary expectations ?
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Oct 2022. There were 4 interview rounds.
How revere the string without using reverse method
Split duplication from the array
(2 Questions)
- Q1. Salary negotiation, asked about my previous employer
- Q2. Speak bold at time of salary negotiation
Interview Preparation Tips
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