我有一个包含以下选项的选择字段:
<select class="course_date_selector applicationSelec">
<option location="Port Moresby" value="300" style="display:none;" course="285-Port Moresby">Aug-01-2015 </option>
<option location="Port Moresby" value="200" style="display:none;" course="285-Port Moresby">Aug-05-2015 </option>
<option location="Location B" value="200" style="display:none;" course="285-Location B">Aug-29-2015 </option>
<option location="Port Moresby" value="230" style="display:none;" course="284-Port Moresby">Aug-06-2015 </option>
</select>
使用jQuery,如何显示course属性等于285-Location B的所有选项?