如何测试以查看在表单提交期间哪个选项是焦点?
<select name="temp" id="keys">
<option selected="selected" value="ISBN">ISBN</option>
<option value="Title">Title</option>
<option value="Author">Author</option>
<option value="Publisher">Publisher</option>
<option value="Date">Date</option>
</select>
从我的片段中,我尝试了 S.param("temp")...