🔥 🌐 Overcome AI Struggles and Learn How to Check Leap Years in JavaScript

Daily Issue #113 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

Improve web performance by reducing initial server response time and design your site to handle high-traffic events without crashing. Explore the Getty Images and Shutterstock $3.7 billion merger, learn how WeakRefs in JavaScript optimize memory management, and check out a CSS-only clock experiment showcasing the power of pure CSS.

Explore Ghost, a modern platform for publishing, memberships, and newsletters. Check out mirotalk for secure, fast real-time video conferences with up to 8K resolution. Build games effortlessly with LittleJS, a lightweight HTML5 game engine. Dive into pulsar, a hyper-hackable text editor, and use lighthouse to audit and optimize your website with automated performance metrics.

Dive in and keep coding!

• How to Reduce Initial Server Response Time - Learn how to improve web performance by reducing initial server response time through hosting, caching, and backend optimization, and pass the Lighthouse audit with ease. Discover what server response time is, its impact on performance, and actionable steps to fix it.

• How To Design For High-Traffic Events And Prevent Your Website From Crashing - Avoid website crashes during high-traffic events like product launches by designing for scalability and efficiency. From scalable cloud hosting to image optimization, the article explores six strategies to keep your site running smoothly and protect your revenue and reputation.

• Getty Images and Shutterstock Merge in $3.7 Billion Deal - Getty Images and Shutterstock are joining forces in a $3.7 billion merger, forming a visual content giant with enhanced libraries, advanced AI tools, and innovative solutions for creatives worldwide.

• WeakRefs in JavaScript: Explained In Simple Terms - Learn how WeakRef in JavaScript helps manage memory efficiently by creating weak references to objects, ensuring smoother cleanup when JavaScript's garbage collection doesn't work as expected. Supported across major browsers, it’s a tool for smarter memory management.

• A CSS-only clock showing the current time - With modern CSS, you can build an accurate clock using just a single element—no JavaScript required! Check out this Chrome-only experiment to see the power of pure CSS in action.

More news here →

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Check if a Year is a Leap Year in JavaScript

The isLeapYear function determines whether a given year is a leap year using the leap year rule.

const isLeapYear = (year) => (year % 4 === 0 && year % 100 !== 0) || (year % 400 === 0);

console.log(isLeapYear(2020)); // Output: true
console.log(isLeapYear(1900)); // Output: false
console.log(isLeapYear(2000)); // Output: true

How it works:

1. A year is a leap year if:

   • It is divisible by 4 (year % 4 === 0) and

   • Not divisible by 100 (year % 100 !== 0), or

   • Divisible by 400 (year % 400 === 0).

2. The function combines these conditions with logical operators to return true for leap years and false otherwise.

More code snippets here →

Browser Compatibility (for Advanced APIs)

Scenario: Using advanced browser APIs like WebRTC or Canvas, where the behavior varies across browsers or devices.

Where AI Struggles: AI-generated code might work in one browser but fail in another because it doesn’t account for real-world quirks or compatibility issues. Issues like permissions or unsupported formats, among others, can lead to incomplete solutions.

const video = document.querySelector('video');
navigator.mediaDevices.getUserMedia({ video: true })
  .then(stream => video.srcObject = stream)
  .catch(error => console.error('Camera access failed', error));

How to fix it: The best solution is traditional manual testing: open each browser and test the code directly. Alternatively, tools like BrowserStack can automate testing across multiple browsers, streamlining the process.

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• Ghost - Independent technology for modern publishing, memberships, subscriptions and newsletters.

• mirotalk - 🚀 WebRTC / P2P / Simple, Secure, Fast Real-Time Video Conferences Up to 8k and 60fps, compatible with all browsers and platforms.

• LittleJS - A tiny fast HTML5 game engine with many features and no dependencies.

• pulsar - A Community-led Hyper-Hackable Text Editor.

• lighthouse - Automated auditing, performance metrics, and best practices for the web.

More code libs here →

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