Elige un nivel.

var/let/const, primitivos, igualdad, strings, arrays, destructuring

closures, hoisting, this, prototipos, ES6 spread/rest

event loop, generators, proxies, cadena de prototipos, clases

promesas, async/await, Promise.all/allSettled, microtasks

?., ??, structuredClone, Object.fromEntries, llamada opcional