Question

html中怎么设置单选按钮必选，比如性别

Answer 1

单选按钮RADIO
<FROM>
<INPUT Type="radio" name="field_name" value="value">
</FROM>

<tr>
<td width="50%" height="50" align="center">性别： </td>
<td height="50" height="50">
<td>
<form><input type="radio" name="sex" value="0" checked />男
<input type="radio" name="sex" value="1" />女</form>
</td></tr>

Answer 2

在标签里打上汉字必填，希望我的回答对你有帮助