Technical Notes

Handling JSON Responses with jQuery's getJSON() There are situations where a server returns a JSON string in response to your request. The jQuery utility function getJSON() parses the returned JSON string and makes it available to a callback function, which is the first parameter of the function. Syntax Here is the simple syntax for the getJSON() method: [selector]. getJSON(URL, [data], [callback]); Here is the description of all the parameters: URL: The URL of the server-side resource contacted via the GET method. data: An object whose properties serve as the name/value pairs used to construct a query string to be

Loading Data with jQuery AJAX Using jQuery AJAX to load static or dynamic data is very easy. jQuery provides the load() method to accomplish this task efficiently. Syntax Here is the simple syntax for the load() method: [selector]. load(URL, [data], [callback]); Here is the description of all the parameters: URL: The URL of the server-side resource to which the request is sent. It could be a CGI, ASP, JSP, or PHP script which generates data dynamically or out of a database. data: This optional parameter represents an object whose properties are serialized into properly encoded parameters to be passed to the request. I

Hello World jQuery Application In this section, we will create our first jQuery application called "Hello World jQuery". This application will simply display Hello World !! (display due to jQuery) message in the browser. After completing this example, you will be able to include the jQuery library in your application and use it to perform simple functions. Let's start developing the Hello World application in jQuery. Setting up jQuery Click on the following link to open a page containing the jQuery library script. This file is around 70KB. Save this as "jquery-1.4.2.js". Now we are ready to use jQuery inside your HTML page. Hello World Example (HelloWorld.html) <htm