by wires. One person on a computer can read documents from another person's computer using

a language called HTML. Each computer's web browser can properly display these

documents. Add CSS to the mix and you've got a beautifully-styled web page.

It is important to note that neither HTML nor CSS are programming languages. back in

Back in 1995 a few people at Netscape started to wonder, "What if there was a way to write

a computer program for the browser?"

This way, when HTML and CSS gets sent

from one computer to another

you can also send over some programming.

This code would run in someone's web

browser and create an even better user experience.

Thus JavaScript was born!

You're probably familiar with Twitter. They use a lot of JavaScript on their

web page to do things.

Such as opening up a tweet in a bigger window for instance

Also, any of the actions below a tweet will trigger some JavaScript to be run.

If I click the star to favorite a tweet JavaScript will tell the server,

"This tweet is now a favorite."

If I click on reply you can see the JavaScript

behavior at work yet again —

it focuses on the expanded reply box.

All of this behavior is made possible by JavaScript

It's worth mentioning that Java is not JavaScript.

They are two separate programming languages.

JavaScript is not just for programming in the browser, but on servers, game programming,

databases, and even robots.

Yeah, robots! We're only limited by our imaginations.

Are you excited yet?

To get started — if you're new to these parts —

please take a moment to play through our free five minute tutorial on JavaScript.com.

Or you can head over to our getting started page where we've curated a list of free

places to learn.

On our news page you can submit your own JavaScript news, read what other people

have posted,

subscribe to our weekly newsletter or listen to our podcast.

Welcome to the wonderful world of JavaScript.

We hope you enjoy your stay.

Awesome! Let's try it!