PUBLIC MARKS from camel with tags tutorial & jQuery

The great thing about Realmac's QuickSnapper site is that if JavaScript is turned off, the list of snaps is visible by default. So we'll follow suit. It's also worth noting that their version only keep pulling in new items until it hits the end. I'll show you how you can keep the list looping, and in a follow up tutorial I'll show you how to hook this in to an Ajax hit that doesn't hammer your server and keeps the effect nice and smooth.

I'm pleased to present you with part one of a two part series on creating a photo site using PHP, jQuery, and AJAX. Originally, I intended to fit the entire tutorial into one screencast, but that quickly became a pipe dream as I realized that there was simply too much to cover. Nevertheless, even if you only watch this first video, you should learn a great deal. We'll be retrieving images from a database, creating a simple login form with authentication, and will then allow for our database to be asynchronously updated. Sounds good? If so, let's get into it.

Introduction rapide et en douceur à l'utilisation d’une des bibliothèques JS à la mode. Ou comment ajouter une couche d’interactions simplement et proprement à vos pages. NB : ce billet sera divisé en trois parties.

jQuery est une bibliothèque javascript open-source et cross-browser qui permet de traverser et manipuler très facilement l’arbre DOM de vos pages web à l’aide d’une syntaxe fortement similaire à celle d’XPath (qui est la syntaxe de manipulation d’arbre XML). jQuery vous permet par exemple de changer/ajouter une classe CSS, créer des animations, modifier des attributs, etc. mais également de gérer les événements javascript ainsi que de faire des requetes AJAX le plus simplement du monde.