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问题描述

我知道, getElementsByName 是在 HTMLDocument HTMLDocument 继承自文档文档继承自 Node



为什么我可以在Chrome中看到 Document.prototype.getElementsByName 而不是Firefox?没有Chrome实现DOM2规范?

解决方案

是的,可能不是。我猜他们至少实现了,如果不是 : - )



但是,这些没有定义 getElementsByName 。那么他们是怎么得到的呢它实际上是在HTML5中指定的()上的文件

Yeah, probably not. I'd guess they at least implement DOM 3, if not a more current version :-)

However, those don't define a getElementsByName either. So how did they get this? It is actually specified in HTML5 (WHATWG/W3) on the Document partial interface:

And at http://dev.w3.org/html5/spec-LC/dom.html#documents-in-the-dom I found the note

So the specification details of these interfaces are still in progress, and varying. WebIDL does.

So Chrome does follow the newer specs (but still has some HTMLDocument?), while Firefox implements an older version. However, it only really matters that these methods do exist on every window.document - not how they got there :-)

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10-29 02:21