<div>
<form action="/examples/web/html_form_radio/" id="form1" target="_blank">
<input type="radio" name="sex" id="male" value="male"/><br/>
<label for="female">Female</label>
<input type="radio" name="sex" id="female" value="female"/><br/><br/>
<input type="submit" value="提交"/>
</form>
<label for="male" form="form1">Male</label>
</div>