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2020/6/19 -And at the point that the component is mounted, there has been no default value set for props.optionalString yet. It doesn't matter that ...
2016/5/17 -Be aware that if you do provide defaultProps on a function component it will take precedence over default parameter values, because React will ...
defaultProps = { age: 21 } will not work on function components in React 19 — the value is ignored at runtime and FunctionComponent no longer types it.
2026/1/7 -React's defaultProps are being phased out in favor of ES6 default parameters and destructuring defaults. This approach is more TypeScript- ...
2023/7/18 -Just by having component name and prop definition in same line. If you have a lot of props then the prop definition might get lost.
2018/6/5 -I'm not sure I understand the point of defaultProps. Do they do anything you can't do by destructuring your Props with a default value? `const { ...
The default value is only used if the size prop is missing or if you pass size={undefined} . But if you pass size={null} or size={0} , the default value will ...
2024/4/27 -I'm migrating my class components to functional components and cannot quite understand how should be used default components in a functional ...
React props pass data between components, enabling reusability and customization. Learn syntax, default values, event handling, and best practices.
You'll also learn when defining props as a class or interface type is best and how to provide default values to optional props. class vs interface in TypeScript.