Javascript Triggers

The front end of a website consists of three layers. XHTML forms the structural layer, which contains structural, semantic markup and the content of the site. To this layer you can add a presentation layer (CSS) and a behavior layer (JavaScript) to make your website more beautiful and user-friendly. These three layers should remain strictly separate. For instance, it should be possible to rewrite the entire presentation layer without touching either the structural or the behavior layer.
        Despite this strict separation, the presentation and behavior layers need instructions from the structural layer. They must know where to add that touch of style, when to initiate that smooth bit of behavior. They need triggers.
        CSS triggers are well known. The class and id attributes allow you to fully control the presentation of your websites. Although it is possible to work without these triggers, by putting the instructions in inline style attributes, this method of coding is deprecated. If you want to redefine your site’s presentation while using them you’re forced to change the XHTML structural layer, too; their presence violates the separation of presentation and structure. Read more on Javascript Triggers at this post

Tags: javascript, javascript triggers, css, xhtml, website, trigger