If you want to start programming in Javascript you might ask where do you actually start?
It might be that you’ve been interested in learning more about web programming in general, for which it would be useful to also learn about HTML and CSS as well. While HTML and CSS deal with the structure of a website, Javascript adds the dynamic flavour to your website.
There is also a possibility that you want to learn Javascript to write backend applications, using NodeJS. The applications for Javascript are several, both websites and web applications can use Javascript.
If this is the first time to Javascript you can start by learning about the language itself and start play around in a sandbox environment. That is the best option to learn Javascript.
Learn Javascript by examples
We will experiment with Javascript by looking at some examples. This guide is for you that have a little programming background.
- Navigate to JSFiddle
- Copy the following code in the HTML box
- Hit the Run button. You should see a popup displaying the text “Hello, world!”
<!DOCTYPE HTML>
<html>
<head>
<script>
alert( 'Hello, world!' );
</script>
</head>
<body>
The body
</body>
</html>So what did we actually do here? Simply explained we used the Javascript function called alert to write a message in a popup box.
Go ahead and create a second alert with a new message. After you hit Run you should have two popup boxes with two different messages.