How do you delete divs that have the same ids but their dispaly properties are different

i have two divs with the same ids but one has di开发者_如何学JAVAsplay=none and the other has display=block i want to delete the one with display='none' i am using javascript framework prototype

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You cannot have two controls with the same ID, it is invalid. You should rewrite your code so the IDs are not the same.

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You should switch to giving the divs classes instead of id's. ID's are unique identifiers, thus are unique, and a page should only contain one element per id (an id can not have multiple elements).

If you'd gave the divs classes instead of id's you could do this:

$$(".<your_class_here>").reject(Element.visible).each(Element.remove);

My Prototype is a bit rusty, but I think this should do it.

EDIT: forgot you can't directly filter by CSS properties.

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You shouldn't have two elements with the same ID. You should use classes.