头元素
头元素包含关于文档的概要信息，也称为元信息（meta-information）。Meta 意为“关于某方面的信息”。
可以这么说，元数据（meta-data）是关于数据的信息，而元信息是关于信息的信息。
头元素内的信息
头元素内的元素不会被浏览器显示出来。
根据 HTML 标准，仅有几个标签在 HTML 的头部分是合法的。它们是：, , ,
, <style> 和 <script>。</p>
<p>这是一个不合法的结构：</p>
<p><head><br> <p>This is some text</p><br></head>在这个案例中，浏览器有两种选择：</p>
<p>显示文本，因为它在段落元素中。 <br>隐藏文本，因为它在头元素中。 <br>假如你将 <h1> 或者 <p> 之类的 HTML 元素像这样置于头元素之中，大多数浏览器都会显示它，即使这是非法的。</p>
<p>浏览器真的应该忽略这个的错误吗？我们不这么认为。即使别人这么认为。</p>
<p> 以上就是HTML教程－头部的内容，更多相关内容请关注PHP中文网（www.php.cn）！<br></p>
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