For a long time, writing JavaScript code in Visual Studio was very painful. There were no tools that could support writing JavaScript. But ReSharper changed this by providing you with a rich set of features that you know from C#.
Support for JavaScript starts with IntelliSense. IntelliSense prompts you with defined JavaScript keywords and methods, and objects and methods from your custom objects as well as from external JavaScript libraries such as jQuery. A sample prompt for jQuery methods is shown in the following screenshot: