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面包屑导航的原理与作用

面包屑导航是一种网站或应用程序的导航方式，它通过在页面上显示当前位置和历史路径，帮助用户快速理解网站结构和内容，并方便用户回到之前访问的页面。面包屑导航通常出现在页面的顶部或侧边，在用户浏览网站时一直存在。它的原理是在用户进入每个页面时，记录下之前访问的路径和页面层级关系，然后将这些信息用面包屑导航的形式展示给用户。面包屑导航的作用主要有以下几点： 1. 帮助用户了解网站结构：通过显示当前页面的位置和路径，面包屑导航可以告诉用户当前页面所处的层级和位置，让用户更好地理解网站的结构和内容，有助于用户快速找到自己需要的信息。 2. 提高用户导航效率：面包屑导航可以方便用户回到之前访问的页面，节省用户找回信息的时间。 3. 提升页面的可用性：面包屑导航可以使页面更易于使用和理解，提供了一种方便、清晰、直观的导航方式，可以提高用户的满意度，降低网站的跳出率。总之，面包屑导航作为一种重要的导航方式，是设计者在构建网站和应用程序时必须考虑的因素之一。

Public @ 2023-06-07 01:50:15

Robots META标签的写法

如果您想让搜索引擎忽略某些网页，可以使用"robots" META标签。以下是这种标签的写法： ```html ``` 上述标签将告诉搜索引擎不要索引或跟踪该网页。下面是一些其他常见的指令： - "index" 将指令搜索引擎索引该页面。 - "follow" 将指令搜索引擎跟踪此页面上的链接。 - "noindex" 将指令搜索引擎不要索引此页面。 - "nofollow" 将指令搜索引擎

Public @ 2023-04-08 21:50:38

哪些网站的目录需求运用robots.txt文件制止抓取

以下是一些可能需要使用robots.txt文件制止抓取的网站目录： 1. 敏感网站：包括医疗机构、政府机构、银行和其他敏感机构的网站。 2. 私人网站：包括个人博客、论坛和社交媒体账号。 3. 用户数据：包括个人信息、照片、视频和其他敏感数据。 4. 搜索引擎排除页面：包括不想在搜索引擎结果中出现的页面。 5. 网站目录：包括一些不需要搜索引擎索引的目录，如网站的管理员和内部页面。 6

Public @ 2023-06-13 02:50:20

面包屑导航的原理与作用

面包屑（Breadcrumbs）是一种用于进行网页导航的UI设计技术，它将当前页面的位置信息清楚的提示给用户，从而让用户在浏览网站时更加清晰，导航页面更加便捷。面包屑导航的原理是类似于一个视觉式的系统路径，它跟踪其用户当前处于网站哪个部分，是用户在当前网页或者浏览器窗口中显示当前页面标题以及它所处网站结构位置的链式结构，它显示用户已经在网站中浏览过的路线，并且可以像浏览这个路线一样，把用户

Public @ 2023-03-06 12:00:30

面包屑导航的原理与作用

面包屑(Bread Crumbs)即把用户从根路径开始一级级带到当前页面的导航处理，它有助于用户更轻松的在网站中定位，也是界面的一个组成部分。面包屑导航的原理是根据不同的页面来分页导航，从而一步步把用户从根页面引导至当前页面，维护着你当前的层级关系，面包屑导航的起源于古代的标记路径的方法，用来返回当前位置的最初出发地，即从哪里出发。面包屑导航有助于用户快速定位当前页面位置，并有助于减少

Public @ 2023-02-26 16:54:33

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[ DB ] CONNECT:[ UseTime:0.022439s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.016518s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.015133s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_config', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 25, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_hook` [ RunTime:0.016464s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.014988s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_hook', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 3, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016568s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 8548 LIMIT 1 [ RunTime:0.015381s ]
[ 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:0.015390s ]
[ 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:0.015555s ]
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[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.016088s ]
[ 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` = 8548 LIMIT 1 [ RunTime:0.014999s ]
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[ SQL ] update `ob_article` set views=views+1 where id=8548 [ RunTime:0.017769s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站结构优化' AND `status` <> -1 LIMIT 1 [ RunTime:0.022073s ]
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[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站结构优化' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.035812s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海面包屑导航' AND `status` <> -1 LIMIT 1 [ RunTime:0.022301s ]
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[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海面包屑导航' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.032192s ]
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