JS经典的二级联动——省份联动下级城市
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?? ??? <option value="" selected="selected">请选择所在省份</option>
???? ?? <option value="直辖市">直辖市</option>
???? ?? <option value="河北">河北</option>
???? ?? <option value="山西">山西</option>
????? ??? <option value="内蒙古">内蒙古</option>
????? ?? ?? <option value="辽宁">辽宁</option>
????? ??? <option value="吉林">吉林</option>
????? ??? <option value="黑龙江">黑龙江</option>
????? ??? <option value="江苏">江苏</option>
????? ??? <option value="浙江">浙江</option>
????? ??? <option value="安徽">安徽 </option>
???? ?? <option value="福建">福建 </option>
????? ??? <option value="江西">江西</option>
????? ?? ?? <option value="山东">山东</option>
????? ??? <option value="河南">河南</option>
????? ??? <option value="湖北">湖北</option>
????? ??? <option value="湖南">湖南</option>
????? ??? <option value="广东">广东</option>
????? ??? <option value="广西">广西</option>
????? ?? ?? <option value="海南">海南</option>
????? ??? <option value="四川">四川</option>
????? ??? <option value="贵州">贵州</option>
????? ??? <option value="云南">云南</option>
????? ??? <option value="西藏">西藏</option>
????? ??? <option value="陕西">陕西 </option>
???? ?? <option value="甘肃">甘肃 </option>
????? ??? <option value="青海">青海</option>
????? ?? ?? <option value="宁夏">宁夏</option>
????? ??? <option value="新疆">新疆</option>
????? ??? <option value="台湾">台湾</option>???
???????? </select>
???? <select name="city">
????? ??? <option selected="selected" value="">请选择所在城市</option>
????? ??? </select></td></tr>
???? </table></form>
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