frontend

javascript
import { useState, useRef, useEffect, useCallback } from "react";

export function useCarousel(length, { delay = 4000 } = {}) {
  const [index, setIndex] = useState(0);
  const [paused, setPaused] = useState(false);
  const savedCallback = useRef(null);

Autoplay Image Carousel in React with Pause-on-Hover via useRef and useEffect

react hooks carousel
by codesnips 3 tabs
typescript
import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Observable, throwError } from 'rxjs';
import { catchError, shareReplay } from 'rxjs/operators';

export interface Project {

Cache and Deduplicate HTTP GET Requests with shareReplay in an Angular Service

angular rxjs caching
by codesnips 3 tabs
typescript
import { useCallback, useEffect, useRef, useState } from "react";

export function useIntersectionObserver(options?: IntersectionObserverInit) {
  const [isIntersecting, setIsIntersecting] = useState(false);
  const nodeRef = useRef<Element | null>(null);
  const optionsKey = JSON.stringify(options ?? {});

Infinite-Scroll Feed with a React IntersectionObserver Hook and Cursor Pagination

react hooks intersection-observer
by codesnips 3 tabs
erb
<h1>Catalog</h1>

<%= turbo_frame_tag "products" do %>
  <div class="product-grid" data-controller="frame">
    <% @products.each do |product| %>
      <%= render "products/card", product: product %>

Pagination links that escape a Turbo Frame with _top

rails hotwire turbo
by codesnips 4 tabs
typescript
export interface Post {
  id: string;
  body: string;
  liked: boolean;
  likeCount: number;
}

React Query optimistic update for likes

react typescript frontend
by codesnips 3 tabs
javascript
// app/javascript/controllers/dropdown_controller.js
import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static targets = ["menu"]

Stimulus for sprinkles of JavaScript interactivity

ruby rails stimulus
by Sarah Mitchell 3 tabs
erb
<div class="copy-field"
     data-controller="clipboard"
     data-clipboard-content-value="<%= content %>"
     data-clipboard-success-value="Copied!">

  <input type="text"

Copy-to-clipboard button with Stimulus

rails hotwire stimulus
by codesnips 3 tabs
typescript
export interface Page<T> {
  items: T[];
  nextCursor: string | null;
}

export interface Post {

Infinite-Scroll List in React with IntersectionObserver and Cursor Pagination

react hooks infinite-scroll
by codesnips 3 tabs
javascript
import { useState, useRef, useEffect, useCallback } from 'react';

export function useOnScreen(options = {}) {
  const [node, setNode] = useState(null);
  const [isIntersecting, setIsIntersecting] = useState(false);

Infinite Scroll in React with an IntersectionObserver useOnScreen Hook

react hooks intersection-observer
by codesnips 3 tabs
erb
<div class="settings-layout">
  <nav class="settings-sidebar">
    <h2>Settings</h2>
    <ul>
      <% settings_sections.each do |section| %>
        <li class="<%= "active" if current_page?(section.path) %>">

Turbo Frames: scoped navigation inside a sidebar

rails turbo hotwire
by codesnips 3 tabs
javascript
import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static values = { keymap: Object }

  connect() {

Stimulus: keyboard shortcuts that work with Turbo navigation

rails stimulus hotwire
by codesnips 3 tabs
javascript
import { StreamActions } from "@hotwired/turbo"

StreamActions.flash = function () {
  const container = document.getElementById("flashes")
  if (!container) return

Turbo Streams: custom action for flash messages

rails turbo hotwire
by codesnips 3 tabs