HTMLCollection和DOM中的NodeList有什么区别？ [英] What is the difference between a HTMLCollection and a NodeList in DOM?

问题描述

我尝试了Google-fu，但似乎找不到该问题的好答案。请帮忙。

I tried my Google-fu but I can't seem to find any good answer to that question. Please help.

编辑：
好​​吧，我找到了此博客文章。因此它们来自不同的DOM级别，但是除此之外，它并没有太多说明...

Ok so I found this blog post. So they come from different DOM levels, but besides that it doesn't say much...

推荐答案

就像您说的那样，NodeList在DOM-Level-3-Core和HTMLCollection在DOM-Level-2-HTML中定义。

As you said, NodeList is defined in DOM-Level-3-Core and HTMLCollection in DOM-Level-2-HTML.

它们的接口是：

interface HTMLCollection {
  readonly attribute unsigned long   length;
  Node               item(in unsigned long index);
  Node               namedItem(in DOMString name);
};

interface NodeList {
  Node               item(in unsigned long index);
  readonly attribute unsigned long   length;
};

因此 NodeList 是 HTMLCollection 的后继者以更通用的形式（用于xml）。

So NodeList is a successor of HTMLCollection in a more generic form (for xml).

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