-----Original Message----- From: css-d-boun...@lists.css-discuss.org [mailto:css-d-boun...@lists.css-discuss.org] On Behalf Of Chris Blake Sent: Monday, July 19, 2010 8:50 PM To: css discuss discuss Subject: [css-d] ID vs. Class
>> I understand the difference between class and ID to a basic level. ... >> - what's the real difference other than using it once or multiple times? 1. If you use an ID multiple times, your HTML won't validate. Maybe you don't care about that. 2. There is a difference between ID and class in the "cascade" in css. If a div has both a class and an ID, the ID rule trumps the class rule, since an ID has more specificity than a class, You can use the cascade to streamline your stylesheet. 3. If you use Javascript, your getElementById functions could go blooey if there are multiple divs with the same ID. (If there's a more technical terms for it, I don't know it.) Beth ______________________________________________________________________ css-discuss [cs...@lists.css-discuss.org] http://www.css-discuss.org/mailman/listinfo/css-d List wiki/FAQ -- http://css-discuss.incutio.com/ List policies -- http://css-discuss.org/policies.html Supported by evolt.org -- http://www.evolt.org/help_support_evolt/
