[英]Checking if more than one option is selected in a Dropdown Multiple Select
如果在多選下拉菜單中選中了多個選項,如何隱藏/顯示特定內容?
HTML
<select title="Choose option/s" class="form-control selectpicker" multiple>
<option>Option 1</option>
<option>Option 2</option>
<option>Option 3</option>
</select>
<span id="legendWasSelected" class="text-hard-light margin-left-xxs">One option was selected</span>
<span id="legendWereSelected" class="text-hard-light margin-left-xxs" style="display:none">More than one option was selected</span>
$('.selectpicker').change(function() {
if($(this).val().length > 1) {
$('legendWereSelected:nth-of-type(2)').show();
} else {
$('legendWereSelected:nth-of-type(2)').hide();
}
});
我尚未測試過,但這應該是正確的,請告訴我是否有錯誤
使用:selected選擇器,如下所示(使用jQuery):
$('#yourIDHere option:selected').length;
如果長度大於1,則您選擇了多個選項
編輯:(基於Deckerz的評論)
您可以使用jQuery .val()從multiselect中獲取選定的值
var selectedValues = $('#yourIDHere').val();
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