解决方法
当然.
HTML：
@H_403_8@What is your preferred vacation spot?<br> <SELECT ID="my_select"> <OPTGROUP LABEL="OptGroup One." id="one"> <OPTION LABEL="Florida">Florida</OPTION> <OPTION LABEL="Hawaii">Hawaii</OPTION> <OPTION LABEL="Jersey">Jersey Shore</OPTION> </OPTGROUP> <OPTGROUP LABEL="OptGroup Two" id="two"> <OPTION LABEL="Paris">Paris</OPTION> <OPTION LABEL="London">London</OPTION> <OPTION LABEL="Florence">Florence</OPTION> </OPTGROUP> </SELECT>JS：
@H_403_8@$("#my_select").change(function(){ var selected = $("option:selected",this); if(selected.parent()[0].id == "one"){ //OptGroup 1,do something here.. } else if(selected.parent()[0].id == "two"){ //OptGroup 2,do something here } });