CODEWITHSUNDEEP
htmlcss
Zach Smith
Zach Smith

Reputation: 8961

benefits of "class" vs "id" tags for a single use html element

I'm doing a code academy course and they ask me to use left and right column classes as opposed to id's. I'm not sure why...

It seems to me that I'm only going to have one Div that is left column, and one Div that is right column... so why would I use a class instead of an ID for this?

Upvotes: 4

Views: 1472

Answers (2)

Harish Boke
Harish Boke

Reputation: 557

IDs always perform well because they are unique per page, but somehow Code Academy could have the same ID. They might also want to avoid using IDs because of the dynamic application and structure, so we cannot predict how their skeleton is. I think it is as per their application logic.

Upvotes: 0

Mateusz
Mateusz

Reputation: 3048

They probably want you to refer to the element in order to move it somehow to left. It is better to use a class because it is possible that at some point you'll want to move another element to left. If you use id instead of class there may be need to repeat the same CSS rule for two different elements (different IDs). Code repetition is considered a bad practice and should be avoided, if possible at design level (no need to rewrite anything later), hence the suggestion to use class instead of id.

Upvotes: 3

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