Book Image

JavaScript for .NET Developers

By : Ovais Mehboob Ahmed Khan
Book Image

JavaScript for .NET Developers

By: Ovais Mehboob Ahmed Khan

Overview of this book

If you want to improve responsiveness or the UX in your ASP.NET applications, JavaScript can be a life saver. In an age where server-side operations have shifted to the client, being able to handle JavaScript with confidence and fluency is vital for ASP.NET developers. There’s no point trying to fight it, so start learning with this book. Make sure your projects exceed user expectations. Begin by getting stuck into the basics of JavaScript, and explore the language in the context of ASP.NET Core. You’ll then find out how to put the principles into practice, as you learn how to develop a basic ASP.NET application using Angular 2 and TypeScript. You’ll also develop essential skills required to develop responsive apps, with a little help from AJAX, ensuring that you’re building projects that can be easily accessed across different devices. With guidance on Node.js and some neat techniques to test and debug a range of JavaScript libraries in Visual Studio, you’ll soon be well on your way to combining JavaScript with ASP.NET in a way that’s capable of meeting the challenges of modern web development head-on.
Table of Contents (17 chapters)
JavaScript for .NET Developers
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Using Windows runtime features


WinJS provides a complete API to use Windows runtime features and device specific features. When accessing the device specific features using WinJS, the web application should run as a windows application and accessing it from a browser will result in an error. Also, Microsoft has released the concept of Hosted apps which enable any web application to host as a windows application with a few configuration steps.

Hosted apps and accessing the camera

Hosted apps were introduced with the launch of UWP. Let's create a simple example to convert a simple ASP.NET core application into a Windows application using the Hosted app concept and access the camera.

Creating the ASP.NET core application

Create a simple ASP.NET core application in Visual Studio 2015 and add the WinJS packages through NPM. Here is the code snippet of package.json:

{
  "version": "1.0.0",
  "name": "ASP.NET",
  "private": true,
  "dependencies": {
    "winjs": "4.4.0"
  },
  "devDependencies": {
...