How to Run JavaScript

JavaScript can run in many environments—from web browsers to local machines. Here are the most common and practical ways to execute JS code:

1. Browser Console

Every modern browser has a built-in JavaScript console. Right-click anywhere, choose Inspect, and go to the Console tab. Try:

console.log("Hello from JDCodebase!");

2. Online Editors

Quickly test code with platforms like:

3. Node.js (Locally)

Node.js allows JavaScript to run outside the browser—on your local machine.

  1. Download from nodejs.org
  2. Create a file: index.js
  3. Write JS code inside
  4. Open terminal and run: node index.js

4. Embedded in HTML

JavaScript can also run inside a web page using the <script> tag.

<!DOCTYPE html>
<html>
  <body>
    <script>
      alert("Hello from JDCodebase!");
    </script>
  </body>
</html>

Which One to Use?

Start with the browser console or the JDCodebase Playground. As you grow, use Node.js or embed JS in your projects.

@JDCodebase • Learn JavaScript the right way 🚀

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