Ajax: promising webtechnologie or a hype”
Ajax is the hype of this moment. Bloggers hit written out there not about and commit bring as a Google and Microsoft free Ajax-applications out. How does Ajax work is the advantage precisely, what in comparison with traditional html and what can you it with in your enterprise”
Asynchronous JavaScript And XML (Ajax) becomes uses with interactive webapplications (rich clients), that immediate data-input process. Ajax is no losstaande technology, but open standards as a JavaScript, Dynamic HTML (DHTML), Cascading Style Sheets (CSS), xml, Document Object combines Correct (DUMB) and, finally, the object XMLHTTPRequest.
Is the advantage of Ajax that pages immediately be improved after input of the visitor. By webpage's, that html only, CSS and JavaScript use, must each request firstly to the want to become steered. The first http-request is by Ajax the same as by a standard webapplication. But the sending of input, if the visitor fills in for instance a form, lifted on someone else manner.
Central state the engine, a collection JavaScript-truces that gebruikmaken of the XMLHTTPRequest-object. of. This ActiveX- or JavaScript-object sit in a standard way in nearly all recent browsers and sees to for it that there on the background communications with the Server (s) possible is.
When the visitor an action undertakes, becomes not Tue only action via the Ajax-engine to the Server steered, and the entire page. Xml sees to for the exchange of data with the serve, while html and CSS become uses for the reproduction of the pages. JavaScript connects these elements so that dynamic interaction possible becomes.
Although all part technologies of Ajax already existed, sees to the combination of all techniques for it that applications much more fast react to input of the users. When good programmed, offers Ajax also a more intutieve use experience.
Applications
Ajax exists approximately a year and always more is applied. Especially webcompanies launch continually new free Ajax-applications. The most known application is possibly Gmail, but also competitor Microsoft uses Ajax in the betaversie of Live E-mail. In this successor of Hotmail, you can inform carry even via and drop off drag to someone else file.
Someone else interesting example is Google Files (maps.google.com) by which the maps, by for instance in and uitzoomen, in realtime are adapted. This in contrast till traditional sites for route planning, as ViaMichelin or Mappy, where you each time must wait till the Server a new card has sent.
Also paid applications dive always more on. As the sticking out Zimbra Collaboration Suite (www.zimbra.com) offers a system for enterprise messaging and an online agenda and address book. Also Pantry-applications as Writely (www.writely.com) become in high tempo via Ajax on the web put.