HTML DOM rev 属性
定义和用法
The rev property sets or returns the relationship between the target URL and the current document.
The rel and rev properties work together. Those two properties are used by search engines to provide a linked navigation menu.
语法
linkObject.rev=relationship
The rel property can have one of the following values:
| Value | Description |
|---|---|
| appendix | Link to the appendix page of the document |
| alternate | Link to an alternative source of the document |
| bookmark | Link to a bookmark |
| chapter | Link to a chapter |
| contents | Link to the table of contents of the document |
| copyright | Link to copyright or the policy of the document |
| glossary | Link to the glossary page of the document |
| index | Link to the index page of the document |
| next | Link to the next page |
| prev | Link to the previous page |
| section | Link to a section in a list of documents |
| start | Link to the first page (used by search engines to show the first page) |
| stylesheet | Link to the style sheet of the document. |
| subsection | Link to a sub-section in a list of current documents |
实例
The following example returns the relationship between the target URL and the current document:
<html>
<head>
<link rev="subsection" id="link1"
href="/htmldom/prop_link_rev.asp" />
</head>
<body>
<script type="text/javascript">
x=document.getElementById("link1");
document.write("Reverse relationship: " + x.rev);
document.write("<br />This page is a subsection of: ");
document.write(x.href);
</script>
</body>
</html>