JavaScript reference
You can use standard JavaScript elements (such as Number, String, and Array) when you develop Windows Store apps. You can find full information about JavaScript in the JavaScript Language Reference section. In addition, you can use the Windows Runtime in your Windows Store app using JavaScript. The Using the Windows Runtime in JavaScript section explains how Windows Runtime elements are represented in JavaScript, and how to use Windows Runtime asynchronous methods and events.
Build date: 5/22/2013
