编程语言：解释型和编译型
WEB前端：HTML+CSS+JavaScript
一、 HTML介绍:
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1. 什么是HTML？
超文本标记语言, <标签名>--标记（标签、节点）
2. HTML是由：标签和内容构成
3. 程序语言有两种：解释性语言（HTML、PHP、Javascript）和编译型语言（C、C++、Java
4. HTML的标签组成部分、属性、实体
HTML的实体： <:< >:> 空格:
5. HTML中注释：
注释的目的：1. 辅助说明 2.代码调试
6. HTML标签（标记）的语法： 标签是由"<"和">"括起来
双标签：<标签名>....
单标签：<标签名/>
7. HTML中的颜色：可以是颜色单词：red/blue/green/yellow...
还可以是：#000000 --- #ffffff
十六进制：0123456789abcdef
其中前两位表示红色，中间两位绿色，后两位表示蓝色。
二、 HTML中HEAD头部设置
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设置网页编码：
关键字：
描述：
网页标题：
导入CSS文件：
CSS代码：
JS文件或代码：
... ...
三、 HTML中的文本标签、格式化标签
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文本标签：
1. *
换行
2. *
...
换段3. ... 斜体
4. ... 强调斜体
5. ... 加粗
6. *... 强调加粗
7. *
8. 引用
9. ... ...
10.* 删除线
....
格式化标签：
1. *
换行
2. *
...
换段3. 列表：
Item
## 4.
-------------- ----------------------------------
* Hyperlink tag Attribute: href is required, refers to the link jump address target: indicates how the link is opened: _blank New window _parent parent window _self This window (default) _top
Top-level window framename Window name title: text prompt attribute (details) Anchor link: Define an anchor point: Previously used < ;a name="a1"> 5. *Picture tag
img-------------------------------- -------width
: Image widthheight
: Image height border: border line thickness 6. Multimedia tags (familiar)--------------------- ---------------
7. *FormTag
-------------------------------- ------
*table table label
caption table title
*tr row label
*th column header label
*td Column label
It is related to the printer. Writing the header and footer before the table body will help to view the code
*thead Header
* tbody Table body
tfoot Table tail
8. **form form tag
------------------- ----------------------------------------
1.
--Form tagCommon attributes of form tag:
*actionAttribute: Submitted target address (URL)
* method attribute: submission method: get (default) and post
The get method is the URL address bar visible, the length is limited (IE2k Firefox 8k), relatively unsafe.
The post method is the URL address Invisible, unlimited length, relatively safe.
enctype: Submission type
target: Where to open the target URL.
name: The attribute gives the form a name. HTML5 is not supported. Use id instead.
2. The form item label input defines the input field where the user can enter data. In HTML 5, the type attribute has many new values.
Details are explained below:
For example:
3.
*name attribute: defines the name, used to store the drop-down value
size: defines the number of visible items in the menu, html5 does not support
disabled when this attribute is true , the menu is disabled.
multiple multiple selection
*
*value attribute: drop-down item The value
*selected attribute: Default drop-down specified item.
4. *
