html5 - Semantics of class vs ID in reusable templates -


i'm working on online store. i've learned little php , i'm using single template file conditional includes , such rather building separate product pages (no database yet though, still learning!).

so have sections exist once per instance of template (ie once per page) such section id="product_image". identified id. on template reused bunch of times think class more semantically appropriate? (yes know there's no functional/technical need switch class)

an id singular. there can 1 of same id on page, , element may have 1 id attribute.

so if component gets reused, id must different between reuses (perhaps sort of database primary key, or similar).

a class name describes elements semantically, i.e. section what? widget? calendar? featured articles? that's class name for.

personally, use class names, , use ids if want link-scroll functionality. classes, ids are, more flexible.


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