Cheatsheets

JavaScript Cheat Sheet — ES2026 Quick Reference

Arrays

JAVASCRIPT
nums.map(n => n * 2);
nums.filter(n => n > 1);
nums.reduce((a, b) => a + b, 0);

Async

JAVASCRIPT
async function load() {
  const res = await fetch(url);
  return res.json();
}

DOM

JAVASCRIPT
document.querySelector(".btn");
el.addEventListener("click", handler);