React Philosophy: Functional philosophy
** A, ** installation
Global installation
yarn global add create-react-app
Enter folder
use
The create – react – app project name
Enter the directory
CD XXX Run the yarn start command to start the project
Second, the virtual DOM and Diff algorithm of small understanding
Virtual DOM: An object that represents a div instead of the DIV DOM. Modifying the object is faster than modifying the DOM directly.
DOM Diff algorithm: The DOM Diff algorithm is used to compare two DOM and find the difference.
Three, the use of JSX notes:
1. Class should be className
2. All the js code needs to be wrapped in {}
{{id:1}} {{id:1}}
4. return( … )