|
| Web News |
France Télécom veut tester la fibre en province
France Télécom, qui mène déjà quelques expérimentations relatives à la fibre optique en région parisienne et dans le département des Hauts-de-Seine, aurait l'intention d'étendre son projet pilote à plusieurs grandes villes de province, rapporte
SFR double les débits du réseau 3G+ HSDPA
SFR annonce faire évoluer la 3G+ (HSDPA) avec un débit
théorique allant jusqu'à 3,6 Mbit/sec. Dans le cadre du
« Happy Zone Kfé, SFR, filiale de Vivendi et Vodafone,
a confirmé son avance sur la 3G+ en présentant des démonstrations
de services utilisant la nouvelle version de la technologie
HSDPA. Selon SFR , cette évolution...
Loi sur la consommation : l'avis de l'Arcep reste lettre morte
Les propositions de l’ARCEP sur la loi sur la consommation ont été fraîchement accueillies par le gouvernement, le ministre de l'industrie ayant repoussé les recommandations données par le gendarme des télécommunications.
Enfants de Montaigne et fans de blogs
Le pays aux 365 fromages compte aussi 27 millions de blogueurs. Le genre permet d’assouvir deux passions bien françaises : le goût pour l’écriture et celui pour l’introspection.
Télévision: le financement du passage au tout numérique fait débat
Les sénateurs ont entamé l'examen du projet de loi sur la «TV du futur», qui encadre le passage à la télévision numérique, d'ici à cinq ans. Principal point de désaccord: le périmètre des aides financières attribuées aux foyers pour s'équiper.
Le haut débit français et les mobiles tirent France Télécom
France Telecom a présenté jeudi dernier ses résultats pour le troisième trimestre 2006. Le chiffre d'affaires de l'opérateur affiche une croissance de 1,2%, à 13,1 milliards d’euros, et même une progression de 8,9% en données historiques, c'est à dire à périmètre d'activité identique...
Microsoft déploie Office Live en France
Le 15 novembre 2006, Microsoft
lancera la version française de son offre Office
Live. Directement inspiré de la version
américaine proposée depuis février 2006 en version
bêta 2, Office Live réunit un ensemble d'outils en ligne
permettant à une entreprise de créer simplement...
|
 |
|
11.22.06
AJAX And Search Engines
 By
Mads Kristensen
In the light of the immense popularity AJAX has received and the emerging tools like Atlas and AJAX.NET, I thought it was the right time to talk about the implications on search engine behaviour on AJAX enabled websites.
In this post I'll split websites into two categories - the public and the protected. A public website is accessible to all people and does not require login of any kind. It's the most common type of website out there. The protected website could be an intranet site or a password protected membership site. In other words, the search engines index the public sites and not the protected sites.
When developing a protected site, you can do just about anything without the concern of search engine ranking. When developing a public website, you do not have that kind of liberty. The public site has to be search engine friendly.
So, when AJAX enabling a public website you have to make sure to keep the search engines happy at all times. If they aren't happy with your website, neither should you be.
That's why I've made a quick little list of Do's and Don'ts about AJAX enabling your public website without loosing the search engines in the process.
Do's
Do use AJAX for user specific actions
Set cookies, track sessions and log actions as long as the content isn't dependant of it. Search engines will have no trouble indexing your content.
Do use AJAX to save content
When a user enters information in a form field and hits the save button, you can use AJAX as much as you like. Search engines will never push the save button anyway and is therefore unaware of the use of AJAX.
Do use AJAX to do form field validation
When validating form fields, you can use AJAX to validate the input without disturbing the search engines. Search engines do not fill out forms so that won't be a problem.
Do use AJAX to display status messages
Displaying status messages of any kind based on user actions, is no problem for search engines, because the do not execute the JavaScript needed anyway and status messages are not important content for search engines to index anyway.
Don'ts
Don't use AJAX for displaying static text content
By static content I mean the main text content of a page and not simple information like the number of current active session or something like that. The main text content of a page is the single most important thing for search engines, so never use AJAX for this purpose.
Don't use AJAX for paging a table or list
If the table is filled with numbers with no search engine relevancy, you can skip this point. If your table or list contains book reviews, chances are that you want them indexed correctly. If your paging is AJAX enabled, the search engines will only index the first page of the table.
Don't use AJAX for navigational purposes
This is not AJAX specific, the same rule applies to simple JavaScript as well. Search engines don't follow JavaScript links, so they will get stuck on the entry page and leaves again without indexing the rest of your site.
The list isn't complete, but I think it covers the basics and will help you to avoid the biggest caveats.
Comments
About the Author:
Mads Kristensen currently works as a Senior Developer at Traceworks located in Copenhagen, Denmark. Mads graduated from Copenhagen Technical Academy with a multimedia degree in 2003, but has been a professional developer since 2000. His main focus is on ASP.NET but is responsible for Winforms, Windows- and web services in his daily work as well. A true .NET developer with great passion for the simple solution. |
|
