Q71. What is your favorite React stack?
Even though the tech stack varies from developer to developer, the most popular stack is used in react boilerplate project code. It mainly uses Redux and redux-saga for s...
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Q72. Why do we use array destructuring (square brackets notation) in `useState`?
When we declare a state variable with `useState`, it returns a pair — an array with two items. The first item is the current value, and the second is a function that upda...
Q73. What are the sources used for introducing hooks?
Hooks got the ideas from several different sources. Below are some of them, 1. Previous experiments with functional APIs in the react-future repository 2. Community exper...
Q74. What is formik?
Formik is a small react form library that helps you with the three major problems, 1. Getting values in and out of form state 2. Validation and error messages 3. Handling...
Q75. What is MobX?
MobX is a simple, scalable and battle tested state management solution for applying functional reactive programming (TFRP). For ReactJS application, you need to install b...
Q76. How do you sync current route in vuex store?
You can use `vue-router-sync` library to sync current $route object in vuex store's state. The usage is quite straight forward with two steps 1. **Installation:** ```bash...
Q77. How do you make sure that user remains authenticated on page refresh while using Context API State Management?
When a user logs in and reload, to persist the state generally we add the load user action in the useEffect hooks in the main App.js. While using Redux, loadUser action c...
Q78. What is the difference between useState and useRef hook?
1. useState causes components to re-render after state updates whereas useRef doesn’t cause a component to re-render when the value or state changes. Essentially, useRef ...
Q79. How do you prevent mutating array variables?
The preexisting variables outside of the function scope including state, props and context leads to a mutation and they result in unpredictable bugs during the rendering ...
Q80. How does React batch multiple state updates?
React prevents component from re-rendering for each and every state update by grouping multiple state updates within an event handler. This strategy improves the applicat...