Mastering JavaScript Promises

Writing a function that returns a promise

The following is a sample code using which you can develop a good understanding on how to implement the promises in WT effectively. Follow these steps:

1. Create a blank Windows Runtime app named IamPromise.
2. Add an input element.
3. Add a div element that displays the result for the URL.
4. Add styling instructions to default.css to add some presentation in the app.
5. Add a change handler for the input element.
6. In the change handler, call xhr.
7. Build and debug the app, and then enter a URL.
8. Create a WT app in JS in VS2013.
9. Add an input element.
10. Within HTML, create an input element using the following code:

    <div> <input id="inputUrl" /> <!—the input id above is called input URL -- > </div> Add a DIV element that displays the ...