What is JavaScript?

JavaScript is a web scripting language that makes web pages more interactive.  It can be used for a large variety of purposes, such as interacting with the user, controlling the browser, or altering the content that is being displayed.

Most websites, including this one, use JavaScript to provide additional functionality to the website.  JavaScript is entirely client-side, with the web browser implementing the code rather than the server.

Web browsers can interpret JavaScript differently, and any JavaScript that is written should be tested against several browsers, especially Internet Explorer, which typically interprets JavaScript different due to historical reasons.  JavaScript can also be disabled within your browser through your Security settings.  Or you can download a browser extension that allows you to choose which sites can run JavaScript.

 JavaScript is different from Java, and does not require any additional software to run.

Find out more about JavaScript on Mozilla’s Official Documentation on JavaScript: https://developer.mozilla.org/en/JavaScript