AJAX
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Written by: Root day of3/31/2011In the category conceptual vocabulary "
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What does this mysterious word? How else, comes from the English, and it's short term English words Asynchronous JavaScript and XML. It's a combination of languages ​​which we have written: JavaScript, XML, HTTP and XTML.
 

A little history
 

At first the programming pages, using the so-called frames (frames). This method of creating proved very effective. The main disadvantages are the incompatibility with older browsers, slow loading, problems with external links, problems of the search, hide the total nerolovatelných frameworks worse overall usability.
 

CSS (Cascading Style Sheets)
 

Cascading style sheets are language format that enables us to view Web pages written in HTML, XHTML or XML.
 

Advantages:

- Faster Loading Site

- shorter code

- do not modify html

- more formatting options

- along with JavaSkricptem can create DHTML
 

Disadvantages:

- lack of support for Web browsers

- the need to optimize the code for different browsers especially

- the need to load the entire web

 

AJAX

 

The next step was the creation of AJAX. This notion was published Jesse James Garrett in 2005 when he published an article Ajax: A New Approach to Web Applications. Principles of use of Ajax can not find earlier. Eg. Use elemetu IFRAME in Internet Explorer 3.0 (1996), the LAYER element Netsapce Navigator 4.0 (1997).

 

 

Benefits:

 

- speeding up work to the user

- No need to reload the entire page content

- reduce the burden on data servers

 

Disadvantages:

 

- users can not use the back button

- changes to the page in the browser address bar does not change the URL

- the need for the use of modern graphical browsers

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