Photon Interactive Front end Developer Interview Questions and Answers

Q1. Var,let and const differences
Ans. 
var, let, and const are all used for variable declaration in JavaScript, but they have different scopes and behaviors.
• var is function scoped, let and const are block scoped

• var can be redeclared and updated, let can be updated but not redeclared, const cannot be redeclared or updated

• const is used for variables that should not be reassigned, like constants
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Q2. What is a promise? in javascript
Ans. 
A promise in JavaScript represents the eventual completion (or failure) of an asynchronous operation and its resulting value.
• Promises are objects that represent the eventual completion (or failure) of an asynchronous operation.

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

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

• Example: new Promise((resolve, reject) => { ... }).then(res
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Self intro, and interests

React, JavaScript, es6

You have to get a rady-made react application work

Q1. It was coomon question about react, redux and easy logic task
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Q1. They provide api and ask to post data in that api with json format
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