Svaya Robotics Front end Developer Interview Questions and Answers

Q1. What are spread and rest operator
Ans. 
Spread operator allows an iterable to be expanded in places where zero or more arguments are expected. Rest operator collects all the remaining elements into an array.
• Spread operator is denoted by three dots (...)

• Spread operator can be used to copy an array or object

• Rest operator is also denoted by three dots (...) and is used in function parameters to collect all remaining arguments into an array
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Q2. What are pure functions
Ans. 
Pure functions are functions that always return the same output for the same input and have no side effects.
• Always return the same output for the same input

• Have no side effects, meaning they do not modify external state or variables

• Pure functions are predictable and easier to test and debug
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Create a corouesel with react

Q1. Some basic info on my communication
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Q2. Previous project and company experience
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Q1. What is promises in js?
Ans. 
Promises in JavaScript are objects representing the eventual completion or failure of an asynchronous operation.
• Promises help in handling asynchronous operations in a more readable and manageable way.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained together using .then() method to handle success and failure cases.

• They help in avoiding callback hell and writing cleaner asynchro...read more
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Q1. Explain promise in javascript
Ans. 
Promises in JavaScript 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: new Promise((resolve, reject) => { ... }).then(result => { ... }).catch(error =>
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Q2. HTML and CSS basic question
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Q3. Let and var difference
Ans. 
let is block scoped, var is function scoped
• let is block scoped, var is function scoped

• let can't be re-declared in the same scope, var can be

• let variables are not hoisted, var variables are hoisted
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Q4. Spread and rest operator
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Q5. Jwt and interceptor concepts
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Q1. Tell me about yourself?
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Ninja test its easy , you can find many mock papers on youtube

Q1. Null operation , string reverse
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Q2. Dsa questions , linked list and so on
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Q1. What is your Dream company
Ans. 
My dream company is a tech giant known for innovation, employee benefits, and a positive work culture.
• Innovative technology and projects

• Strong employee benefits and perks

• Positive work culture and work-life balance
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Q2. Tell me about yourself which is not on your resume
Ans. 
I am an avid hiker and have climbed several mountains in the past year.
• I enjoy spending time outdoors and challenging myself physically

• I have completed multiple hiking trips in various terrains

• I find solace and inspiration in nature, which fuels my creativity in coding
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What is a data structure?

What is the speed of a train that covers a distance of 100 km in 2 hours, expressed in km/hr?