我想更新表中的所有selectboxes与另一个选择框中的值。例如,如果外部选择框的值为格林威治媒体,并且用户单击该按钮,则表格中的所有选择框都应该选择格林威治媒体。如果表格内的选择框中没有Greenwhich媒体,则应添加新选项并进行选择。添加选择选项,如果未找到并将其选为+ jquery
<select class="acc" id="accList" style="width:148px">
<option value="000000000000000001">Greenwich Media</option>
<option value="000000000000000002">Greenwich Media1</option>
</select>
<input id="assignAccounts" class="btn assignAccounts" type="submit" value="Assign this account to All Rows">
<table>
<tr>
<td>
<select class="accSelectandlookup" id="someList0" style="width:148px">
<option value="000000000000000001">Greenwich Media</option>
</select>
</td>
</tr>
<tr>
<td>
<select class="accSelectandlookup" id="someList1" style="width:148px">
<option value="000000000000000002">Greenwich Media1</option>
</select>
</td>
</tr>
</table>
$('.assignAccounts').click(function() {
$('.accSelectandlookup').each(function (i, obj) {
// How do i assign add new option if it does not exist and keep it selected,
// if exists then keep that selected
}
});