Q21. What is the recommended ordering of methods in component class?
_Recommended_ ordering of methods from _mounting_ to _render stage_: 1. `static` methods 2. `constructor()` 3. `getChildContext()` 4. `componentWillMount()` 5. `component...
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Q22. Give an example on How to use context?
**Context** is designed to share data that can be considered **global** for a tree of React components. For example, in the code below lets manually thread through a “the...
Q23. How do you use contextType?
ContextType is used to consume the context object. The contextType property can be used in two ways, 1. **contextType as property of class:** The contextType property on ...
Q24. What is a consumer?
A Consumer is a React component that subscribes to context changes. It requires a function as a child which receives current context value as argument and returns a react...
Q25. How do you solve performance corner cases while using context?
The context uses reference identity to determine when to re-render, there are some gotchas that could trigger unintentional renders in consumers when a provider’s parent ...