What is the difference between props and state in React?

Difference: 1. Props are passed to the component (similar to the formal parameters of a function), while state is managed by the component itself inside the component (similar to a variable declared within a function); 2. Props cannot be modified, but state is changeable and can be modified.

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Developing react components, we most commonly use The two things that cause component rendering may be state and props, so what is the difference between them?

props:

• props: The props of the function component are the input parameter components of the function
• Class component: this.props contains the props called or defined by the component

state:

• The state in the component contains data that may change at any time.
• state is defined by the user and is an ordinary JavaScript object

Difference:

• props are passed to the component (similar to function parameters), and state is managed inside the component by the component itself (similar to variables declared within a function)

• props cannot be modified, all React components must protect their props from being modified like pure functions

• State is created in the component, usually initialized in the constructor

• State is changeable and can be modified. Each setState is updated asynchronously

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