How to write hello world in javascript?

Introduction

Writing “Hello, World!” in JavaScript is often the first step for beginners learning the language. It is a simple program that displays the phrase “Hello, World!” on the screen. In this article, we will dive deeper into how to write “Hello, World!” in JavaScript and explore different methods to achieve the same result.

Using the Console

One of the easiest ways to write “Hello, World!” in JavaScript is by using the console. The console is a tool available in most web browsers that allows developers to view and debug JavaScript code. To write “Hello, World!” in the console, follow these steps:

Step 1: Open your web browser and navigate to a webpage.

Step 2: Right-click on the webpage and select “Inspect” or “Inspect Element” from the context menu. This will open the browser’s developer tools.

Step 3: In the developer tools, navigate to the “Console” tab.

Step 4: Type the following code into the console and press Enter:

“`javascript
console.log(“Hello, World!”);
“`

The phrase “Hello, World!” will be printed in the console.

Embedding JavaScript in HTML

Another way to write “Hello, World!” in JavaScript is by embedding the code directly into an HTML document. This method allows you to display the message on the webpage itself. Follow these steps to achieve this:

Step 1: Create a new HTML file or open an existing one in a text editor.

Step 2: Add the following code inside the `` tags of your HTML file:

“`html

“`

Step 3: Save the HTML file and open it in a web browser. You will see the phrase “Hello, World!” displayed on the webpage.

Separate JavaScript File

In more complex projects, it is common to separate JavaScript code into separate files. This allows for better organization and reusability. To write “Hello, World!” in a separate JavaScript file, follow these steps:

Step 1: Create a new JavaScript file with a .js extension, such as `script.js`.

Step 2: Inside the JavaScript file, add the following code:

“`javascript
document.write(“Hello, World!”);
“`

Step 3: Save the JavaScript file.

Step 4: Create an HTML file or open an existing one.

Step 5: Link the JavaScript file to the HTML file by adding the following code inside the `` tags:

“`html

“`

Step 6: Save the HTML file and open it in a web browser. The phrase “Hello, World!” will be displayed on the webpage.

Conclusion

In conclusion, writing “Hello, World!” in JavaScript is a fundamental step for beginners learning the language. We explored different methods, including using the console, embedding JavaScript in HTML, and separating JavaScript code into a separate file. Each method has its own advantages and can be used depending on the specific requirements of your project.

References

– developer.mozilla.org
– www.w3schools.com
– www.javascript.com