我有以下代码在 JSP 中添加时区表单字段作为下拉列表供用户选择。
<select name="DropDownTimezone" id="DropDownTimezone">
<option value="-12.0">(GMT -12:00) Eniwetok, Kwajalein</option>
<option value="-11.0">(GMT -11:00) Midway Island, Samoa</option>
<option value="-10.0">(GMT -10:00) Hawaii</option>
<option value="-9.0">(GMT -9:00) Alaska</option>
<option value="-8.0">(GMT -8:00) Pacific Time (US & Canada)</option>
<option value="-7.0">(GMT -7:00) Mountain Time (US & Canada)</option>
<option value="-6.0">(GMT -6:00) Central Time (US & Canada), Mexico City</option>
<option value="-5.0">(GMT -5:00) Eastern Time (US & Canada), Bogota, Lima</option>
<option value="-4.0">(GMT -4:00) Atlantic Time (Canada), Caracas, La Paz</option>
<option value="-3.5">(GMT -3:30) Newfoundland</option>
<option value="-3.0">(GMT -3:00) Brazil, Buenos Aires, Georgetown</option>
<option value="-2.0">(GMT -2:00) Mid-Atlantic</option>
<option value="-1.0">(GMT -1:00 hour) Azores, Cape Verde Islands</option>
<option value="0.0">(GMT) Western Europe Time, London, Lisbon, Casablanca</option>
<option value="1.0">(GMT +1:00 hour) Brussels, Copenhagen, Madrid, Paris</option>
<option value="2.0">(GMT +2:00) Kaliningrad, South Africa</option>
<option value="3.0">(GMT +3:00) Baghdad, Riyadh, Moscow, St. Petersburg</option>
<option value="3.5">(GMT +3:30) Tehran</option>
<option value="4.0">(GMT +4:00) Abu Dhabi, Muscat, Baku, Tbilisi</option>
<option value="4.5">(GMT +4:30) Kabul</option>
<option value="5.0">(GMT +5:00) Ekaterinburg, Islamabad, Karachi, Tashkent</option>
<option value="5.5">(GMT +5:30) Bombay, Calcutta, Madras, New Delhi</option>
<option value="5.75">(GMT +5:45) Kathmandu</option>
<option value="6.0">(GMT +6:00) Almaty, Dhaka, Colombo</option>
<option value="7.0">(GMT +7:00) Bangkok, Hanoi, Jakarta</option>
<option value="8.0">(GMT +8:00) Beijing, Perth, Singapore, Hong Kong</option>
<option value="9.0">(GMT +9:00) Tokyo, Seoul, Osaka, Sapporo, Yakutsk</option>
<option value="9.5">(GMT +9:30) Adelaide, Darwin</option>
<option value="10.0">(GMT +10:00) Eastern Australia, Guam, Vladivostok</option>
<option value="11.0">(GMT +11:00) Magadan, Solomon Islands, New Caledonia</option>
<option value="12.0">(GMT +12:00) Auckland, Wellington, Fiji, Kamchatka</option>
</select>
除了此代码之外,还有什么简单的方法可以添加时区表单域吗?我的意思是使用任何简单的方法或 JQuery 的东西?