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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，并有助于减少访问乱套的层次，而对于搜索引擎优化及网站内链接构建也是有益处，它们是一种互动性比较强的网站导航服务，能够帮助用户快速了解到页面在整个网站当中的位置，帮助用户回到上一步去更改信息、选择，从而提升用户的体验.

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

canonical标签是什么意思

a：网页的<Canonical>是告诉搜索引擎在若干的内容相同，URL不同的页面中那个最规范，最希望被收录的，避免相同内链的网页通过不同URL带来权重分散的问题，从而达到页面权重集中的目的。

Public @ 2011-07-22 16:11:20

提交Sitemap

Sitemap（站点地图）是一种文件，站长可通过该文件列出网站上的网页，将网站内容的组织结构告知搜索引擎。神马等搜索引擎网页抓取工具会读取此文件，以便更加智能地抓取网站内容理想状况下，如果您的网站网页间关联得当，神马的网页抓取工具便能够发现其中的大多数网页。即便如此，提交站点地图仍有助于搜索引擎更加有效地抓取网站，尤其是当网站符合以下某个条件时：1.网站为新建网站且指向该网站的外部链接不多。搜索引

Public @ 2022-11-08 16:09:48

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(BreadcrumbNavigation)

这个概念来自童话故事”汉赛尔和格莱特”，当汉赛尔和格莱特穿过森林时，不小心迷路了，可是他们发现在沿途走过的当地都撒下了面包屑，让这些面包屑来协助他们找到回家的路。所以，面包屑导航的效果是通知拜访者他们现在在网站中的方位以及怎么回来。

Public @ 2011-05-05 15:26:27

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[ DB ] CONNECT:[ UseTime:0.019833s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.014517s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 5975 LIMIT 1 [ RunTime:0.013475s ]
[ 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:0.014089s ]
[ 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:0.013896s ]
[ 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:0.014615s ]
[ 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` = 5975 LIMIT 1 [ RunTime:0.013347s ]
[ 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=5975 [ RunTime:0.014307s ]
[ 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:0.020479s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ 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:0.033074s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, '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:0.021936s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ 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:0.033400s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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