Save button using SSJS does not open xe:dialog in

Question

The following save button code works well on mobile xpage:

var checkBox31:com.ibm.xsp.component.xp.XspInputCheckbox = getComponent("checkBox31");
var customerID1:com.ibm.xsp.component.xp.XspInputText = getComponent("customerID1");
var a = checkBox31.getValue();
var b = customerID1.getValue()
if (a == "" || a == null){
   if (b == ""){
   sessionScope.put("ITDialog","You must enter Customer ID");
   var dialog1:com.ibm.xsp.extlib.component.dialog.UIDialog = getComponent("dialog1");
    dialog1.show();
   }
   }

But it does not work on web xpage. I'm using 8.5.3FP6. I used 8.5.3FP1 and 8.5.3FP5 bu had same issue.

Thanks in advance for any help.

Here is sample of code which is not working.    

]]></xp:this.script>
                                </xp:executeClientScript>
                            </xp:this.script>
                        </xp:eventHandler>
                    </xp:button>
                    &#160;
                </xp:panel>
            </xe:dialog>
        </xp:panel>
        <xp:table>
            <xp:tr>
                <xp:td style="background-color:rgb(226,226,226)">
                    <xp:label
                        value="Company:"
                        id="company_Label1"
                        for="company1">
                    </xp:label>
                </xp:td>
                <xp:td>
                    <xp:inputText
                        value="#{document1.Company}"
                        id="company1">
                    </xp:inputText>
                </xp:td>
            </xp:tr>
            <xp:tr>
                <xp:td style="background-color:rgb(226,226,226)">
                    <xp:label
                        value="Address:"
                        id="address_Label1"
                        for="address1">
                    </xp:label>
                </xp:td>
                <xp:td>
                    <xp:inputText
                        value="#{document1.Address}"
                        id="address1">
                    </xp:inputText>
                </xp:td>
            </xp:tr>
            <xp:tr>
                <xp:td style="background-color:rgb(226,226,226)">
                    <xp:label
                        value="Contact person:"
                        id="contactPerson_Label1"
                        for="contactPerson1">
                    </xp:label>
                </xp:td>
                <xp:td>
                    <xp:inputText
                        value="#{document1.ContactPerson}"
                        id="contactPerson1">
                    </xp:inputText>
                </xp:td>
            </xp:tr>
        </xp:table>
    </xp:panel>
</xp:view>

Answer 1

A checkbox has a value of either 'false' or 'true' (indicating it is 'deselected' & 'selected'), it shouldn't return a value of "" or null. Therefore, the first if statement is never true, and your dialog will never appear.

I believe what you want is that if the checkbox is unselected, there must be a customer ID entered in the input. If so, I think this is the code you want:

var checkBox31:com.ibm.xsp.component.xp.XspInputCheckbox = getComponent("checkBox31");
var customerID1:com.ibm.xsp.component.xp.XspInputText = getComponent("customerID1");
var a = checkBox31.getValue();
var b = customerID1.getValue();
if (a == "false") {
    if (b == "") {
        sessionScope.put("ITDialog","You must enter Customer ID");
        var dialog1:com.ibm.xsp.extlib.component.dialog.UIDialog = getComponent("dialog1");
        dialog1.show();
    }
}