ajax.html

jQuery HTML / CSS Methods

The following table lists all the methods used to manipulate the HTML and CSS.

The methods below work for both HTML and XML documents. Exception: the html() method.

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Making AJAX Requests with jQuery for HTML5 and CSS3

The primary purpose of an AJAX library like jQuery is to simplify AJAX requests for HTML5 and CSS3 programmers. It’s hard to believe how easy this can be with jQuery.

How to include a text file with AJAX

      

Building a poor man's CMS with AJAX
AJAX and jQuery can be a very useful way to build efficient websites, even without server-side programming. Frequently a website is based on a series of smaller elements that can be swapped and reused. You can use AJAX to build a framework that allows easy reuse and modification of web content.

Although nothing is all that shocking about the page from the user's perspective, a look at the code can show some surprises:
         
   
 
 
The page has no content! All the divs are empty. None of the text shown in the screen shot is present in this document, but all is pulled from smaller files dynamically.
 
The page consists of empty named divs. Rather than any particular content, the page consists of placeholders with IDs.
 
It uses jQuery. The jQuery library is used to vastly simplify loading data through AJAX calls.
 
All contents are in separate files. Look through the directory, and you can see very simple HTML files that contain small parts of the page. For example, story1.html looks like this:
 
 
 
Sound HTML Foundations
 
It's All About Validation
 
Choosing your Tools
 
Managing Information with Lists and Tables
 
Making Connections with Links
 
Adding Images
 
Creating forms
 
 
 
If you're building a large site with several pages, you usually want to design the visual appearance once and reuse the same general template repeatedly.
 
Also, you'll probably have some elements that will be consistent over several pages. You could simply create a default document and copy and paste it for each page, but this approach gets messy. What happens if you have created 100 pages according to a template and then need to change the header? You need to make the change on 100 different pages.
 
 
Here's how you use this sort of approach:
 
 
Create a single template for your entire site. Build basic HTML and CSS to manage the overall look and feel for your entire site. Don't worry about content yet. Just build placeholders for all the components of your page. Be sure to give each element an ID and write the CSS to get things positioned as you want.
 
Add jQuery support. Make a link to the jQuery library, and make a default init() method. Put in code to handle populating those parts of the page that will always be consistent.
 
Duplicate the template. After you have a sense of how the template will work, make a copy for each page of your site.
 
Customize each page by changing the init() function. The only part of the template that changes is the init() function. All your pages will be identical, except they have customized init() functions that load different content.
 
Load custom content into the divs with AJAX. Use the init() function to load content into each div.
 
 
This is a great way to manage content, but it isn't quite a full-blown content-management system. Even AJAX can't quite allow you to store content on the web. More complex content management systems also use databases rather than files to handle content. You'll need some sort of server-side programming (like PHP) and usually a database (like mySQL) to handle this kind of work.
 
About This Article
 
This article is from the book:
 
About the book authors:
 
Andy Harris taught himself programming because it was fun. Today he teaches computer science, game development, and web programming at the university level; is a technology consultant for the state of Indiana; has helped people with disabilities to form their own web development companies; and works with families who wish to teach computing at home.
 
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