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H标签如何正确使用

H标签用于定义HTML文档中的标题。一般来说，一个HTML文档应该只有一个H1标签，表示主标题，而后续的章节标题则可以使用H2、H3等标签。以下是正确使用H标签的示例： ```html My Website

Welcome to My Website

About Us

We are a small company dedicated to bringing you the best products.

Our Products

We offer a wide range of high-quality products to meet all your needs.

Product 1

Product description goes here.

Product 2

Product description goes here.

``` 在这个例子中，我们首先定义了一个H1标签，表示主标题。然后我们使用H2标签定义关于我们和我们的产品的章节标题。最后，我们使用H3标签定义每个产品的名称。请注意，每个标题都应该在前面使用较小的数字，例如，H2标签应该在H1标签之后使用，而H3标签应该在H2标签之后使用。

Public @ 2023-06-25 22:50:21

Alt文字的重要性

图片alt属性是搜索引擎唯一能识别的图片信息，因此，在优化网站时，尽可能利用alt属性阐述图片的主题内容，但是又要避免关键词的重叠堆砌，该图片属性作用也不仅仅告诉搜索引擎图片的主要信息，另外在图片出现加载失败时，还能够让访客理解图片所阐述的内容！用来对网页上的图片进行描述，光标在图片上时显示的提示语即采用该标签实现。从SEO和用户体验来看，ALT-代替属性都是必要的，其重要性主要有：网页内容相关性

Public @ 2022-10-09 15:16:45

META标签的常见用法

最近，Danny Sullivan谈到了如何处理的搜索引擎meta标签的问题，以下是一些关于在Google中如何处理这些问题的答案。多内容数值我们建议你把所有的Meta标签内容放在一个meta中。这将使得meta标签更易于读取并降低发生错误的概率。例如：<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">

Public @ 2011-06-08 16:08:27

H标签概念

Heading标签也叫做H标签，HTML语言里一共有六种大小的heading 标签，是网页html 中对文本标题所进行的着重强调的一种标签，以标签<h1>、<h2>、<h3>到<h6>定义标题头的六个不同文字大小的tags,本质是为了呈现内容结构。共有六对，文字从大到小，依此显示重要性的递减，也就是权重依次降低。W3C指出h1-h6标签可定义标题。h

Public @ 2010-09-23 16:08:23

H标签作用

H标签（Heading）是HTML中用于定义标题的标签，它定义了文档的结构和层次，以便于用户和搜索引擎更好地理解和导航文本内容。H标签共有六个不同级别，从H1到H6，其级别由高到低，H1为最高级别，H6为最低级别。正常情况下，一个网页中应该只出现一个H1标签，H2-H6可以根据需要适当使用。H标签的作用是强调文本内容的重要性和层次关系，并且对于SEO也有一定的帮助，可以提高网页的排名。

Public @ 2023-03-26 15:00:14

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[ DB ] CONNECT:[ UseTime:0.022275s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.015976s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 9430 LIMIT 1 [ RunTime:0.015009s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.015309s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.015514s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.015532s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 9430 LIMIT 1 [ RunTime:0.014962s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_article` set views=views+2 where id=9430 [ RunTime:0.016087s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站页面优化' AND `status` <> -1 LIMIT 1 [ RunTime:0.022783s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站页面优化' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.031468s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海H标签' AND `status` <> -1 LIMIT 1 [ RunTime:0.021801s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海H标签' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.031624s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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