Binh Vo

Binh Vo

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How to not show on Label when change dropdownlist if duplica

Jun 24 2015 12:24 AM
Following my title, I don't know why it not working. Please help me !. Please show code if need. here my code
<asp:DropDownList ID="ddl" runat="server" ClientIDMode="Static" OnSelectedIndexChanged="ddl_SelectedIndexChanged"></asp:DropDownList>
 
<asp:Label ID="label" runat="server" ClientIDMode="Static" CssClass="field" Width="150px"></asp:Label>
 
<script type="text/javascript">
   $(function () {
      $("#ddl").change(function (e)
      {
         var itemExists = false;
         var txt = $("#label").val();
         e.preventDefault();
         $("#ddl option").each(function () {
            if ($(this).text() == $.trim(txt))
            {
               itemExists = true;
               alert('Item already exists'
            ); }
});
}); });
</script> 

Answers (1)