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Como validar el TextBox que se encuentra dentro de un Repeater

R

Roberto Eder

Guest
Como puedo validar el TextBox con ID txtCodigoArticulo para saber si esta vacio, esta dentro de un Repeater y no me esta dejando tomar el
id lo quiero validar con la función ValidaComplemento() pero no toma encuenta el ID txtCodigoArticulo?

mi código es el siguiente

<script>
function ValidaComplemento()
{
if (document.getElementById("txtCodigoArticulo").value.trim() == "")
{
alert("Por favor ingrese el No. de la orden de compra.");
document.getElementById("txtCodigoArticulo").focus();

return false;
}
</script>


<asp:Repeater ID="repConceptos" runat="server">
<ItemTemplate>
<asp:TextBox ID="txtCodigoArticulo" runat="server" placeholder="Código articulo Min:1 Max:18" MinLength="1" MaxLength="18" OnClientClick="return ValidaComplemento()" CssClass="form-control form-control-sm art" style="background-color:#FBEFEF;" data-toggle="toltip" title="Es el codigo del articulo que CASA LEY tiene" onkeypress="return validarDecimal(event);" AutoComplete="off">
</asp:TextBox>
</ItemTemplate>
</asp:Repeater>

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