Advanced Guides

Advanced JavaScript

Explore patterns and techniques that push JavaScript beyond the basics.

Currying & Partial Application

// Example of a curried function
function multiply(a) {
  return function(b) {
    return a * b;
  };
}
const double = multiply(2);
console.log(double(5)); // 10

Async Generators

async function* streamData(url) {
  const response = await fetch(url);
  const reader = response.body.getReader();
  while(true){
    const {done, value}=await reader.read();
    if(done) break;
    yield value;
  }
}

Performance Optimization

Techniques to make your web apps faster and more efficient.

Web Workers





Lazy Loading Images


Images below load as they enter the viewport.

Lazy Image
Lazy Image





Security Best Practices


Protect your application from common vulnerabilities.


    

  • Use Content Security Policy (CSP) headers.
    • 

  • Validate and sanitize all user inputs.
    • 

  • Store passwords with strong hashing (bcrypt, Argon2).
    • 

  • Enable HTTPS and HSTS.
    • 







Deployment Strategies


Choose the right workflow for continuous delivery.


Blue‑Green Deployment


Maintain two identical environments and switch traffic after validation.


Canary Releases


Gradually expose new versions to a subset of users.