Posted At Thu, Oct 12, 2023 8:59 AM

How to Run JavaScript

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Table of Contents

1. How To Add JavaScript to HTML 
2. How To Write Your First JavaScript Program 
3. How To Use the JavaScript Developer Console

1. How To Add JavaScript to HTML <a name="add-javascript-to-html"></a>

JavaScript is a versatile scripting language that can be easily integrated into HTML documents. To add JavaScript to your HTML files, follow these steps:

Include JavaScript Inline

You can add JavaScript directly within your HTML file using the <script> tag. For example:

<!DOCTYPE html>
      // Your JavaScript code here

Link to External JavaScript Files

For larger scripts or to keep your HTML clean, link to external JavaScript files using the <script> tag's src attribute:

<script src="myscript.js"></script>

2. How To Write Your First JavaScript Program <a name="write-first-program"></a>

Now that you know how to include JavaScript in your HTML, let's write your first program. Here's a simple "Hello, World!" example:

// Your first JavaScript program
console.log("Hello, World!");

This script logs "Hello, World!" to the browser's console. To run this code, simply save it in an HTML file and open it in a web browser.

3. How To Use the JavaScript Developer Console <a name="use-developer-console"></a>

The JavaScript Developer Console is a powerful tool for running and debugging JavaScript code in your browser. Here's how to open and use it:

Open the Developer Console
- In Chrome or Firefox, press F12 or Ctrl+Shift+I (Windows/Linux) or Cmd+Option+I (Mac) to open the Developer Console.

Running JavaScript
- In the console, you can type and run JavaScript commands directly.

console.log("This is the Developer Console");

These are the basics of running JavaScript. With practice and experimentation, you'll become more comfortable with using JavaScript for web development.

Next one is learning more about JavaScript Variable Declarations.

Click this link! 👇
JavaScript Variable Declarations.

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