[CLOSED] Verify if a numberfield is empty in javascript.

[pdcase]

Hi,


I wish to verify if a numberfield is empty in javascript:

 <ext:NumberField ID="txtParametrosQuantidadePrestacoesMaximaGiro" AnchorHorizontal="100%"
                                                                        runat="server" FieldLabel="Máxima Giro" AllowNegative="false" AllowDecimals="false"
                                                                        DecimalPrecision="2" StyleSpec="text-transform:uppercase;"
                                                                        AllowBlank="false" MaxLength="4" Vtype="numberrange" StartNumberField="#{txtParametrosQuantidadePrestacoesMinima}">
                                                                        <Listeners>
                                                                            <Blur Handler="if(this.getValue() != ''){window.alert('test');}" />
                                                                        </Listeners>
                                                                    </ext:NumberField>

It Works, but if the value in the NumberField is 0 then it don´t show the alert.

[geoffrey.mcgill]

Maybe give the following a try...

this.getValue() !== ''

The !== will also perform a type comparison.