JavaScript Basics

What you'll learn

• ✦Explain what JavaScript is and where it runs — in the browser and in Node
• ✦Declare variables the right way with let and const, and name JavaScript's core types
• ✦Build strings cleanly with template literals and work with text confidently
• ✦Write reusable functions, including modern arrow functions
• ✦Store lists in arrays and transform them with map, filter, and forEach
• ✦Model real-world things with objects and read their properties
• ✦Make decisions with if/else and repeat work with loops
• ✦Change a live web page through the DOM, react to clicks with events, and fetch JSON data from the internet
• ✦Write modern JavaScript with destructuring, spread, modules, and async/await
• ✦Handle errors with try/catch, store data in localStorage, and schedule work with timers

Syllabus