document.documentElement 和 document.body

MDN : 

The Document.documentElement read-only property returns the Element that is the root element of the document (for example, the <html> element for HTML documents) .

 

层级关系：

1. document

2. documentElement(html)

3. head, body

 

posted @ 2015-06-08 17:09  林大勇  阅读(203)  评论(0)  编辑  收藏  举报