JavaScript Tutorial 🚀

JavaScript is a dynamic programming language that runs in web browsers and enables interactive web pages. Here's a beginner-friendly guide to get you started:

Basics of JavaScript 💻

• Variables: Use let or const to declare variables

  let message = "Hello, World!";
  const PI = 3.14159;
  

• Data Types: Includes numbers, strings, booleans, arrays, objects, and null
  • Example: typeof operator

    console.log(typeof 42); // "number"
    console.log(typeof "JavaScript"); // "string"
    

Core Concepts 🧠

• Functions: Reusable blocks of code

  function greet(name) {
    return `Welcome, ${name}!`;
  }
  

• DOM Manipulation: Modify web pages dynamically

  document.getElementById("demo").innerHTML = "Modified content";
  

ES6+ Features 🌟

• Arrow Functions: Concise syntax

  const square = x => x * x;
  

• Template Literals: Easier string formatting

  let name = "Alice";
  console.log(`Hello ${name}!`);
  

Common Errors ⚠️

• Forgetting semicolons
• Scope issues with var vs let
• Type coercion pitfalls

For more advanced topics, check out our Advanced JavaScript Tips guide.