Get All Elements in an HTML document with a specific CSS Class

Question

What\'s the best way to get an array of all elements in an html document with a specific CSS class using javascript?

No javascript frameworks like jQuery allowed her

Answer 1

Keep in mind that atleast FF3 already has a native implementation of getElementsByClassName afaik.

If you're going to implement your own solution, maybe you should try to find a xpath-solution since all modern browser have native support for xpath.