You are refactoring a React application and notice that two components, one with a and another with a , are conditionally rendered at the same location based on some state. What would React do during reconciliation when the state changes between these two component types?
- Prioritize rendering the
over the
- Render both components simultaneously
- Replace the existing component with the new one
- Throw an error because of invalid JSX syntax
When conditionally rendering two components at the same location in React, React will replace the existing component with the new one when the state changes. This is because React reconciles the virtual DOM, and when the state changes, it updates the DOM to match the new JSX structure. It doesn't render both components simultaneously, and it doesn't throw an error as long as the JSX syntax is valid.
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- Prioritize rendering the
over the
- Render both components simultaneously
- Replace the existing component with the new one
- Throw an error because of invalid JSX syntax
When conditionally rendering two components at the same location in React, React will replace the existing component with the new one when the state changes. This is because React reconciles the virtual DOM, and when the state changes, it updates the DOM to match the new JSX structure. It doesn't render both components simultaneously, and it doesn't throw an error as long as the JSX syntax is valid.Loading...
Related Quiz
- How does JSX prevent injection attacks by default?
- Which of the following best describes the concept of "prop drilling"?
- To avoid abrupt changes during route transitions, it's often recommended to use a combination of CSS ________ and opacity changes.
- Why we need to pass a function to setState()?
- When creating a custom hook, it's a convention to start the hook's name with ________.