Retrieving data from a Web API

A Web API (Web Application Programming Interface) is a HTTP API that is created using the .NET framework. It uses the HTTP protocol to return data. Since HTTP is available universally across a wide range of platforms, these APIs can be used on Web and mobile platforms and across various devices.

In this example, we will use jQuery Ajax to post a request to a Web API. The constructs used in this example are summarized in the following table:

Construct	Type	Description
$("#identifier")	jQuery selector	This selects an element based on its ID.
$("html_tag")	jQuery selector	This selects all elements with the specified HTML tag.
$.getJSON()	jQuery function	This loads the JSON data from the server using the HTTP GET request.
.append()	jQuery method	This inserts content at the end of each matched element.
click	jQuery event	This is fired when you click on an element. It corresponds to the JavaScript click event.
event. preventDefault() ...