小编Joh*_*ohn的帖子

import React from "react";\n\nconst User = React.memo(function({id, name, isSelected, ...other}) {\n  return (\n    <div {...other}>\n      {name} - {isSelected && "Selected"}\n    </div>\n  );\n});\n\nexport default User;

import React from "react";\n\nfunction Application() {\n  const [users, setUsers] = React.useState([\n    {id: 1, name: "John Doe #1"},\n    {id: 2, name: "John Doe #2"},\n    {id: 3, name: "John Doe #3"}\n  ]);\n  const [selectedUserId, setSelectedUserId] = React.useState(null);\n\n  return users.map((user) => {\n    const isSelected = selectedUserId === …