#abortcontroller code explainers

javascript

import { useEffect, useState } from 'react';
 
export function useJobStatus(jobId, { interval = 3000 } = {}) {
  const [status, setStatus] = useState('pending');

Polling a job status with a React hook

custom-hooks polling cleanup

Intermediate 8 steps

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

function createAutocomplete(input, resultsList, { minChars = 2, delay = 300 } = {}) {
  let timer = null;
  let controller = null;

Building a debounced autocomplete widget

debouncing abortcontroller closures

Intermediate 9 steps

javascript

const DEFAULT_OPTIONS = {
  method: 'GET',
  timeout: 5000,
  retries: 3,

A resilient fetch wrapper with retries and timeout

fetch retry timeout

Intermediate 8 steps

javascript

export function createSearchClient(baseUrl) {
  let inFlight = null;
 
  async function search(query, { signal } = {}) {

Cancelling stale requests in a search client

closures abortcontroller async

Intermediate 8 steps

typescript

type SearchResult = {
  id: string;
  title: string;
};

Cancelling stale searches with AbortController

abortcontroller cancellation async

Intermediate 7 steps

javascript

import { useState, useEffect, useMemo } from 'react';
 
function useDebounce(value, delay = 300) {
  const [debounced, setDebounced] = useState(value);

Debounced search with cancellation in React

custom-hooks debounce abortcontroller

Intermediate 9 steps

javascript

import { useState, useEffect } from "react";
 
export function useUser(userId) {
  const [user, setUser] = useState(null);

How a data-fetching hook works in React

custom-hooks data-fetching abortcontroller

Intermediate 8 steps

typescript

import { useState, useEffect, useRef, useCallback } from "react";
 
interface SearchResult {
  id: string;

A debounced search hook in React

debounce custom-hooks abortcontroller

Intermediate 7 steps