1.块级标签（独占一行）
H系列标签，p标签，div标签
2.行内标签
span标签
3.form标签

<form action="表单提交数据的地址" method=“GET/POST”></form>

3.1文本输入框

<input type="text" />

3.2密码输入框

<input type="password" />

3.3按钮

<input type="button" value=“按钮” />

3.4提交

<input type="submit" value="提交"/>

3.5单选

<input type="radio" name="radio1" value="radio1" checked="checked"/><input type="radio" name="radio1" value="radio2"/>

3.6多选

<input type="checkbox" name="checkbox1" value="checkbox1"/><input type="checkbox" name="checkbox1" value="checkbox2"/>

3.7上传

<input type="file" name="filename"/>需要指定<form enctype="multipart/form-data">

3.8重置

<input type="reset" value="重置" />

3.9多行文本框

<textarea name="moretext"></textarea>

3.10.1下拉框

<select name="select_test" >size="1"#控制显示长度multiple="multiple"#控制是否多选 <option value="1" >1</option> <option value="2" >2</option> <option value="3" >3</option></select>

3.10.2select分组

<select name="select_test" > <optgroup label="1"> <option value="1" >1.1</option> <option value="2" >1.2</option> <option value="3" >1.3</option> </optgroup> <optgroup label="2"> <option value="1" >2.1</option> <option value="2" >2.2</option> <option value="3" >2.3</option> </optgroup></select>

4.a标签用法
target=""
4.1链接

<a href="http://wwww.baidu.com">baidu</a>

4.2锚点

<a href="#t1">1</a><a href="#t2">2</a><a href="#t3">3</a><div id="#1">1</div><div id="#2">2</div><div id="#3">3</div>

5.img图片

<img src="路径" alt=“图片” title="图片"/>

6.ul无序列表

<ul> <li>1</li> <li>2</li> <li>3</li> </ul>

7.ol有序列表

<ol> <li>1</li> <li>2</li> <li>3</li> </ol>

8.dl

<dl> <dt>标题</dt> <dd>1</dd> <dd>2</dd> <dd>3</dd></dl>

9.table

<table> <thead> <tr> <td>1</td><td>1</td> </tr> </thead> <tbody> <tr> <td>1.1</td><td>1.2</td> </tr> <tr> <td>2.1</td><td>2.2</td> </tr> </tbody> </table>合并单元格<td colspan="2"></td> #横向合并<td rowspan="2"></td>#纵向合并

10.label标签

关联输入框<label for="username">用户名：</label><input id="username" type="text" name="username" />