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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，把用户引导回他刚开始的页面，起到返回的作用。面包屑导航的作用是可以把网站用户从A页面转向B页面时，在B页面建立到A页面的返回路径，从而让用户可以快速进行网站内部导航，增强当前页面的可操作性，减少用户在网站内部进行浏览导航时的搜索时间，提高用户使用满意度，且它的层级结构特别的清晰，让用户清楚的知道他当前处于网站的什么位置，避免了用户在网页中搜索的过程，大大提高了网站的用户体验度，从避免搜索的次数中节省了一定的流量，从而让网站使用更加的便捷。

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

nofollow标签：节省权重流失10%

| 什么是nofollow？● HTML页面中a标签的属性值，告诉搜索引擎不要追踪某一个链接。● 为什么设置nofollow标签？● 避免权重的流失| 如何做nofollow标签？● 一些不要权重的页面链接，给加上nofollow● 如：搜索按钮、关于我们、联系我们、更多、点击查看● 以搜外网首页为案例讲解| nofollow与robots.txt区别：● nofollow决定权重分配，robot

Public @ 2009-03-25 16:08:51

URL的优化

网站结构优化是SEO的主要工作之一，对大中型网站来说更是重点和难点。URL的优化是结构优化的基础内容。URL处理不好，经常造成页面收录问题，就更谈不上排名和流量了。其实URL的优化是相对简单的部分，因为是SEO自己完全可以掌控的，只需要注意一些细节。下面总结几条关于URL优化的经验和技术要求。1）域名的选择如果是在五六年年前，我会告诉大家域名中最好放上关键词。不过现在建议大家域名中能放关键词最好，

Public @ 2016-02-03 16:11:10

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

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

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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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.025826s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.018175s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 6312 LIMIT 1 [ RunTime:0.017329s ]
[ 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:0.017618s ]
[ 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:0.017719s ]
[ 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:0.018505s ]
[ 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` = 6312 LIMIT 1 [ RunTime:0.017333s ]
[ 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+1 where id=6312 [ RunTime:0.018126s ]
[ 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:0.024339s ]
[ 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:0.036424s ]
[ 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:0.024154s ]
[ 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:0.033049s ]
[ 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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