React Native Questions Asked in Companies

React Native provides many ways to handle screen sizes. Some of them are given below: 1. Flexbox: It is used to provide a consistent layout on different screen sizes. It has three main properties: flexDirection justifyContent alignItems 2. Pixel Ratio: It is used to get access to the device pixel density by using the PixelRatio … Read more

We prefer class component when the component has a state and lifecycle; otherwise, the functional component should be used. In React Native, functional components and class components are two primary ways of creating components. However, with the introduction of React hooks, functional components have become more powerful and versatile, often making them the preferred choice. … Read more

The InteractionManager is a native module in React Native, which is responsible for differing the execution of a function until an interaction has finished. To handle this deferral, we need to call InteractionManager.runAfterInteractions(() => {…}). The InteractionManager is important because React Native has two threads. One is JavaScript UI thread, which handles drawing updates to … Read more

HOC Stands for Higher-Order Component. It is a technique, which allows you to reuse the component logic. It is a function that takes a component and gives back a new component. Syntax const NewComponent = higherOrderComponent(WrappedComponent); In React Native, as in React, HOC stands for Higher Order Component. A Higher Order Component is a pattern … Read more

Keys are a unique identifier. They are used to identify which items have changed, updated, or deleted from the lists. It should always use inside the array. In a React Native interview, if you’re asked about the importance of keys in React Native apps, here’s a concise and accurate answer: React Native, like React for … Read more