浏览器会自动插入哪些DOM元素？ [英] Which DOM elements do browsers automatically insert?
问题描述
我正在生成供客户端使用的XPaths服务器端，我感到困惑的是为什么 only 表路径（即 td
I am generating XPaths server-side for use on the client-side, and I was puzzled as why only table paths (i.e. content in a td) couldn't be found in the DOM.
结果是，现代浏览器（至少是Chrome和Firefox）插入了 tbody 加载文档时在表行周围添加标记。请参见为什么浏览器将tbody元素插入表元素？
Turns out, modern browsers (at least Chrome and Firefox) insert a tbody tag around table rows upon document loading. See Why do browsers insert tbody element into table elements?
除了 tbody 之外，在计算服务器端XPath时还有其他DOM元素吗？
Apart from tbody, are there other DOM elements I should be aware of when calculating XPaths server-side?
推荐答案
在SGML / HTML4术语中，可以推断出其他一些元素，甚至是 head 和 body 元素，HTML5继续这样做。因此，类似于 http://home.arcor.de/martin.honnen/html的文档/test2012011901.html 是有效的HTML5，尽管它既没有 head 也没有 body 元素和任何HTML5解析器应该添加它们，以便DOM树看起来像
In SGML/HTML4 terminology some other elements can be inferred, even the head and the body element can be inferred, and HTML5 continues that. So a document like http://home.arcor.de/martin.honnen/html/test2012011901.html is valid HTML5 although it does neither have head nor body element and any HTML5 parser is supposed to add them so the DOM tree looks like
<!DOCTYPE html>
<html>
<head>
<title>Test</title>
</head>
<body>
<h1>Test</h1>
<p>This is a test.</p>
</body>
</html>
我无法告诉您有关其他元素的所有详细信息，以上仅是示例。在 http://www.w3.org/TR/html5中查找详细信息/syntax.html#optional-tags 。
I can't tell you all details about other elements, the above is only an example. Look for details in http://www.w3.org/TR/html5/syntax.html#optional-tags.
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