Q521. What happens If I pass string type for getPrototype method?
In ES5, it will throw a TypeError exception if the obj parameter isn't an object. Whereas in ES2015, the parameter will be coerced to an `Object`. ```javascript // ES5 Ob...
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Q522. What are the guidelines to be followed for writing reducers?
There are two guidelines to be taken care while writing reducers in your code. 1. Reducers must be pure without mutating the state. That means, same input always returns ...
Q523. How do you set the prototype of one object to another?
You can use the `Object.setPrototypeOf()` method that sets the prototype (i.e., the internal `Prototype` property) of a specified object to another object or null. For ex...
Q524. How does ReactJS work behind the scenes?
ReactJS is a powerful JavaScript library for building user interfaces. While it appears simple on the surface, React performs a lot of complex operations behind the scene...
Q525. How do you check whether an object can be extended or not?
The `Object.isExtensible()` method is used to determine if an object is extendable or not. i.e, Whether it can have new properties added to it or not. ```javascript const...
Q526. How is `useReducer` Different from `useState`?
There are notable differences between `useState` and `useReducer` hooks. | Feature | `useState` | `useReducer` | |-----------------------|--------------------------------...
Q527. How do you prevent an object from being extend?
The `Object.preventExtensions()` method is used to prevent new properties from ever being added to an object. In other words, it prevents future extensions to the object....
Q528. What is useContext? What are the steps to follow for useContext?
The `useContext` hook is a built-in React Hook that lets you access the value of a context inside a functional component without needing to wrap it in a component. It hel...
Q529. What are the different ways to make an object non-extensible?
You can mark an object non-extensible in 3 ways, 1. `Object.preventExtensions` 2. `Object.seal` 3. `Object.freeze` ```javascript var newObject = {}; Object.preventExtensi...
Q530. What are the use cases of useContext hook?
The `useContext` hook in React is used to share data across components without having to pass props manually through each level. Here are some common and effective use ca...