Idexcel Technologies Interview Questions and Answers

They asking javascript and react coding questions

Q1. Explain the Redux flow
Ans. 
Redux flow is a predictable state container for JavaScript apps.
• Actions are dispatched to the store

• Reducers specify how the state changes in response to actions

• State is updated immutably

• Components subscribe to the store to get updated state
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Q2. Optimization of react application
Ans. 
Optimizing a React application involves improving performance and efficiency.
• Use code splitting to load only necessary components

• Minimize the use of unnecessary re-renders

• Implement memoization for expensive calculations

• Optimize images and assets for faster loading

• Utilize virtualization for long lists or tables
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Q1. Thinking ability
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Q2. Flattening Array
Ans. 
Flattening an array involves converting a multi-dimensional array into a single-dimensional array.
• Use recursion to handle nested arrays. Example: flatten([1, [2, [3, 4]], 5]) results in [1, 2, 3, 4, 5].

• Utilize built-in methods like Array.prototype.flat() in JavaScript. Example: [1, 2, [3, 4]].flat() gives [1, 2, 3, 4].

• Iterate through the array and push elements to a new array. Example: let result = []; for (let item of...read more
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Q3. React Javascript Html css node js basic Questions
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1. Write an automation code to extract product details from the Amazon website.
2.Sorting a list having negative values
3. Write regular expression for email validation

Q1. Questions are related to core java - oops concepts, few coding, selenium concepts and basic manual questions
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Q1. Basic HR questions
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