Web Performance Optimization: Core Web Vitals

Optimize your website for better performance. Improve Core Web Vitals and user experience. Core Web Vitals ✅ LCP (Largest Contentful Paint) < 2.5s ✅ FID (First Input Delay) < 100ms ✅ CLS (Cumulative Layout Shift) < 0.1 Image Optimization ✅ Use WebP/AVIF ✅ Lazy loading ✅ Responsive images Code Splitting // React const LazyComponent = ... Read more

Accessibility (a11y) Web Development Guide

Build accessible websites for everyone. Learn WCAG guidelines and implementation. Semantic HTML Click me ✅ Click ❌ ARIA Attributes ★ 4.5 rating Focus Management // Trap focus in modal modal.addEventListener(‘keydown’, (e) => { if (e.key === ‘Tab’) { // Handle focus } }); Screen Reader Testing ✅ NVDA (Windows) ✅ VoiceOver (Mac) ✅ Axe DevTools … Read more

CSS Grid Complete Layout Guide

Master CSS Grid for modern layouts. Build complex responsive layouts with ease. Basic Grid .container { display: grid; grid-template-columns: 1fr 2fr 1fr; gap: 20px; } Named Areas .container { display: grid; grid-template-areas: “header header header” “sidebar main aside” “footer footer footer”; } .header { grid-area: header; } .sidebar { grid-area: sidebar; } .main { grid-area: … Read more

Go (Golang) for Backend Development

Build fast backend services with Go. Learn Go fundamentals for web development. Hello World package main import “fmt” func main() { fmt.Println(“Hello, World!”) } Variables var name string = “John” age := 30 // Type inference Functions func add(a, b int) int { return a + b } Goroutines go func() { fmt.Println(“Running concurrently”) }() … Read more

tRPC: End-to-End Type Safety for APIs

Build type-safe APIs with tRPC. Share types between frontend and backend seamlessly. Why tRPC? ✅ End-to-end type safety ✅ No code generation ✅ Auto-completion ✅ Runtime validation Server Setup import { initTRPC } from ‘@trpc/server’; const t = initTRPC.create(); const appRouter = t.router({ user: t.router({ get: t.procedure.query(async () => { return [{ id: 1, name: … Read more

Tailwind CSS 4: Utility-First Styling

Master Tailwind CSS for rapid UI development. Build beautiful interfaces with utility classes. Setup npm install tailwindcss npx tailwindcss init Basic Classes Content Responsive Design class=”text-sm md:text-lg lg:text-xl” class=”w-full md:w-1/2 lg:w-1/3″ Dark Mode class=”bg-white dark:bg-gray-900″ class=”text-gray-900 dark:text-white” Customization // tailwind.config.js module.exports = { theme: { extend: { colors: { brand: ‘#FF5733’ } } } } … Read more

Svelte 5: Reactive Framework Tutorial

Learn Svelte 5 for blazing-fast web apps. Build reactive applications with less boilerplate. Reactivity count++}>Count: {count} Components // Button.svelte {@render children()} Stores import { writable } from ‘svelte/store’; export const count = writable(0); Runes ✅ $state – Reactive state ✅ $derived – Computed values ✅ $effect – Side effects ✅ $props – Component props Conclusion … Read more

Vue 3 Composition API: Modern Vue Development

Master the Composition API in Vue 3. Build scalable Vue applications with modern patterns. Setup const { createApp, ref, computed, onMounted } = Vue; createApp({ setup() { const count = ref(0); const doubled = computed(() => count.value * 2); const increment = () => count.value++; onMounted(() => { console.log(‘Component mounted’); }); return { count, doubled, … Read more

AWS Lambda: Serverless Functions Complete Guide

Build serverless applications with AWS Lambda. Run code without managing servers. Getting Started // handler.js exports.handler = async (event) => { const { name } = JSON.parse(event.body); return { statusCode: 200, body: JSON.stringify({ message: `Hello ${name}!` }) }; }; Trigger Types ✅ API Gateway (HTTP) ✅ S3 (file uploads) ✅ DynamoDB (stream) ✅ CloudWatch (scheduled) … Read more