The difference between prop and state in react

Source: Internet
Author: User
It is to be understood that props is a stream of data passed by a parent component to a child component that can be passed on to the descendant component. The state, however, represents the internal status of a component (which can be a parent component, a descendant component).
Changing the state of a component itself, semantically, is that the component has changed internally, and it may be necessary to re-render the component and the descendant components it contains.
The props is a parameter passed by the parent component that can be used to display the content, or a setting for the state of this component (some props can be used to set the component's States), not just the change in the inside of the component will cause a re-render, and the props passed by the parent component will change and execute.

Since both changes are likely to cause component re-rendering, it is only good to understand the meaning of pros and state to decide when to use props or state.

Official guidance has said, props initialization data, has been unchanged, the state is to change.

The state should include data that could be changed by the component's event handlers and trigger user interface updates, because the component itself cannot modify its own props.

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