重温了下html5
<form>
日期<input type="date"/>
邮件 <input type="email" />
URL <input type="url" autofocus required placeholder="请输入信息。。。" />
亮度<input type="range" min="0" max="255"/>
容器<canvas id="c1"></canvas>
颜色 <input type="color" />
地址<select>
<optgroup label="深圳">
<option>南山区</option>
<option>福田区</option>
</optgroup>
<optgroup label="北京">
<option>东城区</option>
<option>西城区</option>
</optgroup>
</select>
search<input type="text" list="b"/>
<datalist id="b">
<option>bus</option>
<option>car</option>
</datalist>
<input type="submit" name="submit" value="提交"/>
</form>