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JavaScript and JQuery: Interactive Front-End Web Development
book

JavaScript and JQuery: Interactive Front-End Web Development

by Jon Duckett
June 2014
Beginner
640 pages
14h 12m
English
Wiley
Content preview from JavaScript and JQuery: Interactive Front-End Web Development

8

AJAX & JSON

Ajax is a technique for loading data into part of a page without having to refresh the entire page. The data is often sent in a format called JavaScript Object Notation (or JSON).

The ability to load new content into part of a page improves the user experience because the user does not have to wait for an entire page to load if only part of it is being updated. This has led to a rise in so-called single page web applications (web-based tools that feel more like software applications, even though they run in the browser). This chapter covers:

WHAT AJAX IS

Ajax allows you to request data from a server and load it without having to refresh the entire page.

DATA FORMATS

Servers typically send back HTML, XML, or JSON, so you will learn about these formats.

JQUERY & AJAX

jQuery makes it easier to create Ajax requests and process the data the server returns.

image

WHAT IS AJAX?

You may have seen Ajax used on many websites, even if you were not aware that it was being used.

image

Live search (or autocomplete) commonly uses Ajax. You may have seen it used on the Google website. When you type into the search bar on the home page, sometimes you will see results coming up before you have finished typing.

Sometimes when you are shopping online and add items to your shopping cart, it is updated ...

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Publisher Resources

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