问题
A collection is a list of nodes per W3C DOM Reference but where is a node defined? I'm assuming it is an element currently but where is the formal defenition?
回答1:
It's in the DOM level 2 Core specification, here . The DOM HTML specs you're looking in contains elements specific to HTML, but it extends DOM 2
来源：https://stackoverflow.com/questions/6617030/where-is-a-node-defined