Javascript

"JavaScript is now a language every developer should know."
– Mike Loukides, Vice President of Content Strategy for O'Reilly Media

JavaScript is everywhere: servers, rich web client libraries, HTML5, databases, even JavaScript-based languages. If you've avoided JavaScript, this is the year to learn it. And if you don't, you risk being left behind.

What is it?

• Programming language
• Runs within web browser
• Browser runs Javascript based upon events
• [Server-side language as well!]

What can it do?

Javascript provides programmatic access to virtually all aspects of a page.

• CSS properties
• Markup content
• Forms, communication to Server
• Add functionality