Your hands-on guide to JavaScript fundamentals
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 types
  
• Master techniques for building cross-browser programs
  
• Speed up and simplify app development with jQuery
  
• Quickly retrieve data from a server using AJAX requests
  
• Adapt your app for mobile devices with jQuery Mobile
  
• Build Windows 8 apps using HTML, CSS, and JavaScript