Silicon It Solutions Reactjs Developer Interview Questions and Answers

Q1. Splice & slice difference
Ans. 
Splice is used to add/remove elements from an array, while slice is used to extract a portion of an array without modifying the original array.
• Splice modifies the original array, while slice does not.

• Splice can add elements, remove elements, or replace elements in an array.

• Slice returns a new array with the selected elements from the original array.

• Example: const arr = [1, 2, 3, 4, 5]; arr.splice(2, 1); // removes elem...read more
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Q2. Coding question | How to reverse string
Ans. 
To reverse a string, iterate through the characters and swap them from start to end.
• Create an empty string to store the reversed result.

• Iterate through the characters of the input string from end to start.

• Append each character to the empty string to reverse the order.

• Return the reversed string.
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Q1. Aptitude Questions on Profit-Loss, Speed-time-distance, State difference, logical reasoning, sample papers can be found on youtube. Programs on array and string, program level is good practice leetcode and...read more
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Write a program in vanila js to fetch api data and show in dropdow after select it should call api for perticular data and also should cache value of if it is recent api call happen

Q1. Basics of javascript and react concept.
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Asked about vanilla.js in react interview.