Code Explainers

Code explainers tagged #hooks

javascript 
import { useState, useCallback, useRef } from 'react';
 
function LikeButton({ postId, initialLiked, initialCount }) {
  const [liked, setLiked] = useState(initialLiked);

Optimistic like button with React

optimistic-ui abortcontroller error-handling
Advanced 7 steps
javascript 
import { useState, useRef, useEffect, useCallback } from 'react';
 
export function CopyButton({ text, label = 'Copy' }) {
  const [copied, setCopied] = useState(false);

A copy-to-clipboard button in React

clipboard-api hooks cleanup
Intermediate 7 steps
javascript 
import { createContext, useContext, useEffect, useState, useCallback } from 'react';
 
const ThemeContext = createContext(null);
 

Building a theme provider with React Context

context hooks dark-mode
Intermediate 9 steps