Javascript Programming Tutorials, Guides & Best Practices

The usersSlice will handle user-related state, such as loading data from an API and managing CRUD operations.

Define usersSlice in src/features/users/usersSlice.js:

Advanced object-oriented programming in JavaScript involves understanding prototypes, mastering the this keyword in various contexts, using the class syntax, and leveraging mixins for code reuse. These concepts allow developers to write more modular and maintainable code, and they form the backbone of many JavaScript libraries and frameworks.

Metaprogramming is a programming technique where programs have the ability to treat other programs as their data. In JavaScript, this often involves writing code that can inspect or modify other code at runtime. JavaScript provides powerful tools for metaprogramming, including Symbols, the Reflect API, and Proxies.

import React from 'react';
import { FixedSizeList as List } from 'react-window';

const Row = ({ index, style }) => (
  <div style={style}>Row {index}</div>
);

function MyList({ itemCount }) {
  return (
    <List
      height={400}
      itemCount={itemCount}
      itemSize={35}
      width={300}
    >
      {Row}
    </List>
  );
}

export default MyList;

This approach drastically reduces the number of rendered DOM nodes, improving performance when dealing with large datasets.