Jio Platforms Interview Questions, Process, and Tips

Machine code test related to javascript and mcq questions from output based

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...read more
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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
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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]);
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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
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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
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Q1. What is your name
Ans. 
My name is John Smith.
• Full name is John Smith

• Common name

• No need for additional details
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Q2. What is your qualifications
Ans. 
I have a Bachelor's degree in Business Administration and 3 years of experience in customer support roles.
• Bachelor's degree in Business Administration

• 3 years of experience in customer support roles

• Strong communication and problem-solving skills

• Ability to work well under pressure

• Experience using CRM software and ticketing systems
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Q3. Where do you live
Ans. 
I live in a cozy apartment in downtown Los Angeles.
• I live in downtown Los Angeles

• I reside in a cozy apartment

• My address is in the city center
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Normal group discussion topics

Q1. Object oriented programming,dsa
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Q1. SOLID , DRY, K.I.S.S principles
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SOLID, DRY, K.I.S.S are software design principles to ensure code quality and maintainability.
• SOLID: Encourages writing clean, maintainable, and scalable code by following five principles - Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion.

• DRY (Don't Repeat Yourself): Avoids duplication in code by extracting common functionality into reusable components or functions.

• K....read more
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Q2. Event Loop, React Fiber, Try catch block, Finally keyword, React Memo , HOC
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