JavaScript Step by Step (Repost)

Expand your expertise—and teach yourself the fundamentals of javascript. If you have previous programming experience but are new to javascript, this tutorial delivers the step-by-step guidance and coding exercises you need to master core topics and techniques.Discover how to:Work with javascript syntax, variables, and data typesMaster techniques for building cross-browser programsSpeed up and simplify app development with jQueryQuickly retrieve data from a server using AJAX requestsAdapt your app for mobile devices with jQuery MobileBuild Windows 8 apps using HTML, CSS, and javascript