The first step to getting familiar with a new language is to write a simple **“Hello World” program**.

A web browser is a suitable option for our JavaScript working environment where we will write and test code.


The first step to writing our program is to attach a JavaScript script to a web page. For server-side environments (like *Node.js*), you can execute the script with a command like "*node* *myProgram.js*"

> JavaScript programs can be inserted into any part of an HTML document with the help of the `<script>` tag.

Now, the only thing left is to display the "Hello World" message inside of the `<script>` tags so that this `alert` can be used.


See the "Hello World" program in JavaScript below:



<!DOCTYPE HTML>
<html>
<head>
</head>

<body>
  <script>
    alert( 'Hello, world!' );
  </script>
</body>

</html>

codemirror

How to write a "Hello World" program in JavaScript

The first step to getting familiar with a new language is to write a simple “Hello World” program. A web browser is a suitable option for our JavaScript working environment where we will write and test code. 