使用Jquery单击按钮时如何删除SELECTED Listbox Item？

Question

I have 2 Asp ListBox called lstLeft and listRowField . When user select the item from 1stLeft and click the button it will move to another listbox (listRowField) but with restriction (Some of the item shouldn't move) .

upto this I already made, that code is working fine . When user select the restricted items and click the button, the selected items should be unselect again

TotalQuantity from 1stLeft is not allowed to move . Once it shows the alert message, that selection color from 1stLeft should remove.

I tried this code, but doesn't work

$('#rightRow').click(function () {       

    var options = $("[id*=lstLeft] option:selected");

    for (var i = 0; i < options.length; i++) {
        if ($(options[i]).val() === 'TotalQuantity' || $(options[i]).val() === 'ExtendedPrice' || $(options[i]).val() === 'ExtendedCost' || $(options[i]).val() === 'Profit') {

            alert($(options[i]).val() + " is not allowed to Data Field");

            //I tried these TWO CODES. But it doesn't work.

            //$('.multiselectOptions:selected', this).remove();
            $("#lstLeft option[value=" + $(options[i]).val() + "]").attr("selected", false);
        }
        else {
            var opt = $(options[i]).clone();

            $(options[i]).remove();
            $("[id*=listRowField]").append(opt);
        }
    }
}

UPDATE

//Multiselection
$('.multiselectOptions').mousedown(function (e) {
    e.preventDefault();
    $(this).prop('selected', $(this).prop('selected') ? false : true);
    return false;
});


<asp:ListBox ID="lstLeft" class="form-control" runat="server" SelectionMode="Multiple" Height="260px" onclick="ListBoxClient_SelectionChanged(this, event);">
   <asp:ListItem class="multiselectOptions" Value="StoreID">StoreID</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="ItemLookupCode">ItemLookupCode</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="ExtendedDescription">ExtendedDescription</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="SubDescription1">SubDescription1</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="DepartmentName">DepartmentName</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="CategoryName">CategoryName</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="SupplierCode">SupplierCode</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="SupplierName">SupplierName</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="TotalQuantity">TotalQuantity</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="ExtendedPrice">ExtendedPrice</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="ExtendedCost">ExtendedCost</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="Profit">Profit</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="UnitOfMeasure">UnitOfMeasure</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="CustomerAccountNumber">CustomerAccountNumber</asp:ListItem>
   <asp:ListItem class="multiselectOptions" Value="CustomerName">CustomerName</asp:ListItem>
</asp:ListBox>

This code I am using for multi selection. Is that making me wrong for deselect?

Thanks

Answer 1

尝试这个，

$('option:selected', this).remove();