api: "YAML JSON TOON Database"
version: 1.0.0
format: json
dataset:
  id: 11
  slug: javascript-es6-features
  title: "JavaScript ES6+ Features Reference"
  description: "Key JavaScript features from ES6 through ES2022: arrow functions, template literals, destructuring, spread, async/await, optional chaining, nullish coalescing, and top-level await."
  category: "Programming Languages"
  category_slug: programming-languages
  tags: "javascript,es6,web,reference"
  view_count: 0
  created_at: 1777673262
  updated_at: 1777673262
data:
  features
    [8]{name,version,description,example}:
      "Arrow Functions","ES6 (2015)","Concise function syntax with lexical this binding","const add = (a, b) => a + b;"
      "Template Literals","ES6 (2015)","String interpolation with backticks and ${}","`Hello, ${name}!`"
      Destructuring,"ES6 (2015)","Unpack values from arrays or objects into variables","const {name, age} = person;"
      "Spread Operator","ES6 (2015)","Expand iterables into individual elements","const merged = [...arr1, ...arr2];"
      Async/Await,"ES8 (2017)","Syntactic sugar over Promises for async code","const data = await fetch(url);"
      "Optional Chaining",ES2020,"Safe nested property access without null check",user?.profile?.name
      "Nullish Coalescing",ES2020,"Fallback for null/undefined only (not falsy)","const x = value ?? defaultValue;"
      "Top-level Await",ES2022,"Use await outside async functions in modules","const config = await loadConfig();"