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HTML5和其他HTML有什么区别？

HTML5是HTML的最新版本，与之前的版本有以下几点区别： 1. 语义化元素：HTML5增加了一些语义化的元素，例如

、

、

和

等，使得网页结构更加清晰明了。 2. 媒体支持：HTML5支持多媒体播放，包括视频和音频等，不需要使用第三方插件。 3. 表单控件：HTML5新增了很多表单控件，例如日期选择器、搜索框等，使得表单更加易用。 4. 本地存储：HTML5支持本地存储，可以在浏览器端存储数据，使得离线应用成为可能。 5. Canvas绘图：HTML5的Canvas元素可以实现基于JavaScript的高性能2D绘图和动画，比如图表和游戏等。 6. WebGL绘图：HTML5的WebGL技术可以实现在浏览器中高性能的3D渲染，使得Web应用可以呈现更加逼真的3D场景。总之，HTML5使得Web应用具备更加灵活、高性能和丰富的功能，为Web开发带来了更多的可能性。

Public @ 2023-04-11 00:51:12

mysql忘记root密码与root帐号被删除处理方法

威海Web网站开发威海mysql
1004

说明：请根据自己主机系统及问题选择对应步骤。1、查找修改配置文件修改my.ini(windows系统)或my.cnf(linux系统)文件，windows系统:my.ini在mysql的安装目录下,如果是我司默认环境,路径是：d:\SOFT_PHP_PACKAGE\mysql\my.ini用记事本打开编辑在 [mysqld] 节下加入下面一行[mysqld]skip-grant-tableslin

Public @ 2011-08-24 15:46:49

自动备份mysql并删除7天前备份

以下是一种可能的解决方案： 1. 创建一个名为“backup.sql”的空文件。 2. 创建一个名为“backup.sh”的新文件，并将以下代码复制粘贴到其中： ``` #!/bin/bash # Set the database credentials USER="yourusername" PASSWORD="yourpassword" HOST="localhost" DB_NAME=

Public @ 2023-04-10 17:00:43

HTML5和其他HTML有什么区别？

HTML5是HTML语言的最新版本，与其他HTML相比，它具有更多的新增功能和改进。与早期的HTML版本相比，最大的区别是HTML5提供了更多的新增标签，可通过语义帮助更好地表示构成网页的各个部分。此外，它还支持多媒体元素，并且可以能够使用JavaScript API来更新网页的内容，从而减少服务器端请求和响应的次数，从而提高网页加载性能。此外，HTML5还规定了包含蓝牙、位置信息等新特性

Public @ 2023-02-27 05:00:19

HTML5和其他HTML有什么区别？

HTML5和其他版本的HTML主要的区别在于： 1. 多媒体支持：HTML5支持多种视频、音频格式，无需使用外部插件，如Flash。 2. 更多的标签：HTML5中新增了许多标签，如header、footer等，使得网页结构更加清晰明了。 3. 语义化：HTML5标签更加具有语义化，比如 article、section、nav 等标签，使得网页更容易理解。 4. 数据存储：HTML5提供了

Public @ 2023-04-03 17:00:17

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[ DB ] CONNECT:[ UseTime:0.023677s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016816s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 7060 LIMIT 1 [ RunTime:0.016000s ]
[ 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:0.016332s ]
[ 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:0.016437s ]
[ 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:0.016989s ]
[ 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` = 7060 LIMIT 1 [ RunTime:0.016641s ]
[ 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=7060 [ RunTime:0.019346s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海Web网站开发' AND `status` <> -1 LIMIT 1 [ RunTime:0.022948s ]
[ 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Web网站开发' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.033070s ]
[ 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HTML5,HTML' AND `status` <> -1 LIMIT 1 [ RunTime:0.022768s ]
[ 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HTML5,HTML' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.033689s ]
[ 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', ) ]

0.453118s

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