Introduction to AJAX with jQuery

Introduction to AJAX with jQuery online course
Course Name

Introduction to AJAX with jQuery

Ajax is an important technology for front end web developers.

Ajax, which is short for Asynchronous, JavaScript and XML, lets you use JavaScript to talk to a web server, retrieve information from the server, and update the content of a webpage without leaving the current page, or loading a new webpage.

Ajax requests are triggered by JavaScript code; your code sends a request to a URL, and when it receives a response, a callback function can be triggered to handle the response.

Web developers use Ajax for different purposes, to inject new HTML into a webpage, to receive JSON data from a web server, to post form data to a database.

Unfortunately, different browsers implement the Ajax API differently. Typically this meant that developers would have to account for all the different browsers to ensure that Ajax would work universally.

Fortunately, jQuery provides Ajax support that abstracts away painful browser differences.
    Objectives for this class are:
  • Understand the relationship between the different protocols that comprise "Ajax".
  • Create asynchronous requests through the use of the XMLHttpRequest object.
  • How to use, create and parse a JSON file.
  • Learn .load, $.get Ajax wrapper methods as well as the core $.ajax() method
  • Become familiar with jQuery and its use in efficiently building Ajax applications.
  • Solve problems quickly through the use of error consoles, HTTP inspectors, and JavaScript debuggers.
  • Understand the “same domain policy” security limitations of Ajax and what workarounds can be used (JSONP and CORS).
  • Using 3rd party APIs to interact with Ajax applications.

Applicable Job Roles: Front-end web developer, web developer, software engineer, programmer

Week 1: Ajax Overview
  • Ajax basics
  • Creating the XMLHttpRequest object
  • Creating a simple Ajax example
  • GET and POST
  • Review of HTTP methods
  • Ajax Response formats
  • Ajax Callbacks
  • Introducing JSON
  • Parsing JSON
Week 2: jQuery and Ajax
  • .load() method
  • $.get() and $.post() method
  • Posting data
  • Handling errors
  • Troubleshooting and debugging
Week 3: jQuery $.ajax() and Promises
  • $.ajax() method
  • Understanding the jqXHR object
  • Using Promises with Deferred object
  • Beyond same domain policy: JSONP and CORS
  • Working with Third Party APIs (Yahoo, and Flickr)
Week 4: Beyond Ajax: Real-time Web Apps
  • HTML5 WebSockets
  • WebSockets Protocol
  • Testing out the WebSockets API
  • Pusher: Hosted Real-time Servers
  • Creating our real-time app online
  • Students will have had to take the Introduction to JavaScript class (P131) AND have taken the Introduction to jQuery class (P135) or have equivalent experience.
  • You must have a basic web host account.
Course Books
No are books required for this class.
Course Price
  • Member Price: $120 US
  • Non-Member Price: $220.00 US
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Additional Information:
Your place in the course is confirmed by your payment. Introductory courses are intended for students with no experience in the subject matter and are seeking beginner level training.

Refund Policy: Please read our "Terms and Refund Policy" before registering for this course.

Additional Cost: Book and software migh be required for the course. Read the Requirements and Book section for more information. Course fee does not include the book and software cost .

Start Date: Click on the Register Now button to process to the registration page. You will see the start date of the class on that page.

How eClasses Work:Instructors post lectures, reading selections, and hands-on assignments once a week in the online classroom. Students can discuss the assignments with the instructor and amongst themselves in the classroom area. This format has no set meeting time, which allows students to attend class at a time most convenient to them, yet still provides logically organized communication between class participants. Students can apply for the completion certificate after finishing the class. Web Study certificate is also available. Click on the Certificates link on the top navigation bar for more information.


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Before you register for this class, please read carefully the Outline, Prerequisites, Requirements, Books, and Refund Policy sections.

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