Monotype Senior Sdet Engineer Interview Questions and Answers

Questions related to React and nodejs

Q1. Given array: [1,3,4,[6,7,[8,5],9],2] Result array : [1,3,4,6,7,8,5,9,2]
Ans. 
The given array needs to be flattened to a single-level array.
• Iterate through the array elements

• If an element is an array, recursively flatten it

• If an element is not an array, add it to the result array
Answered by AI
View 1 more answer
Q2. Promise in javascript
Ans. 
Promise is a way to handle asynchronous operations in JavaScript.
• Promises represent a value that may not be available yet.

• They have three states: pending, fulfilled, and rejected.

• Promises can be chained using .then() and .catch() methods.

• They help avoid callback hell and make code more readable.

• Example: new Promise((resolve, reject) => {...})
Answered by AI
Add your answer
Q3. What are array methods in Javascript
Ans. 
Array methods in Javascript are built-in functions that can be used to manipulate arrays.
• Some common array methods are push(), pop(), shift(), unshift(), slice(), splice(), concat(), join(), indexOf(), and forEach().

• push() adds one or more elements to the end of an array.

• pop() removes the last element from an array.

• shift() removes the first element from an array.

• unshift() adds one or more elements to the beginning of a...read more
Answered by AI
Add your answer

Q1. Asked about myself and few javascript concepts.
Add your answer
Q2. State and props from react
Ans. 
State and props are two important concepts in React for managing data and passing data between components.
• State is used to manage data within a component and can be updated using setState() method.

• Props are used to pass data from parent component to child component.

• State is mutable while props are immutable.

• Example:

• Example:
Answered by AI
Add your answer