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How do I keep a confirmation message from firing when changing a text city field, when the field is empty?

I am working on an issue where we need to update a customer's address.  When you change the city, state, or zip, a message is fires that says "Do you want to change the city from priorCity to currentCity".  If the current city.  This is working correctly, however, if the field is initially blank, or if you remove the listed city, confirm that changing it to blank is OK, then type in a fresh city name, the message fires and it is not supposed to.  

I tried changing the if statement from  if (priorCity != currentCity)
        {

to

 if ((contactInformationForm.elements[priorCityField].value.length != 0) && priorCity != currentCity)
        {...

then loaded my test server, the city was set to "Phoenix" I erased it and pressed tab, the message fired. Good.  Then I typed in a new city name and the message didn't fire, which is what I want, but then I changed THAT city to something else, and the message doesn't fire at all anymore.  It's still thinking the length of the field is 0.  
from the jsp I have - 
 
                    	property="property(city)" 
                    	onblur="isAlphaWithSpacesOnly(this);javascript:checkCityStateZip(this);checkCity(this);"" 
                    	onchange="setChanged();
                       	errorId="property(addressId)"/>
 
from the js i have -
 
function checkCity(field)
{
    if (zipLookupDone == "true")
    {
        var priorCity = contactInformationForm.elements[priorCityField].value;
        var currentCity = contactInformationForm.elements[cityField].value;
        if (priorCity != currentCity)
        {
            
            if (!confirm("Should the city be changed from " + priorCity + " to " + currentCity + "?"))
            {
                contactInformationForm.elements[cityField].value = priorCity;
            }
            else
            {
             contactInformationForm.elements[priorCityField].value = currentCity;
            }
        }
    }
}

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Bishork
Asked:
Bishork
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1 Solution
 
webwyzsystemsCommented:
Check the jsp part...Fix your quotes around the onChange() handler and end of previous line perhaps?
Does the global zipLookupDone contain true? Proper quotes around the field names you are referring to in the elements array?
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BishorkAuthor Commented:
oops, the jsp should be as given below -

in the js i have defined

var zipLookupDone = "false";

but it gets overriden if there is already a value in the zip field

    if (contactInformationForm.elements[zipField].value.toString().length > 0)
    {
          zipLookupDone = "true";
    }

so when i load the page and the address is already filled in, ziplookupdone should be true.  but what my tester is telling me (i havent tried to test this yet), is taht even when the fields are all initially blank, the confirmation message is still firing when changing from empty field to entering a city name.  

Lets say you have: City:_____  and you change it to City: Beverly Hills
you get "Do you want to...yes or no"

That shouldn't happen if the field is blank.  Only if its City: San Diego and you change it to City: Los Angeles

                    <cf-el:text 
                    	property="property(city)" 
                    	onblur="isAlphaWithSpacesOnly(this);javascript:checkCityStateZip(this);checkCity(this);" 
                    	onchange="setChanged();"
                       	errorId="property(addressId)"/>

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BishorkAuthor Commented:
with if ((contactInformationForm.elements[priorCityField].value.length != 0) && priorCity != currentCity)
if the initial value of the field is "phoenix" and i erase it, confirm, then change the blank field to "calexico" it wont fire.  this is good.  but then if i change it again from calexico to "prescott" it wont fire.  
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BishorkAuthor Commented:
i also tried if (((priorCity != null) || (priorCity != "")) & priorCity != currentCity)
and that didnt have any affect whatsoever from just using priorCity != currentCity alone
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webwyzsystemsCommented:
Why not put your checkCity() function in the onChange handler? I think it would be called more reliably there.
Also - setup priorCity as a global javascript variable instead. Right now it's scope is limited to the function. So...something like:



var priorCity= ""; // or populate with existing data on document load
 
function checkCity(field)
{
  if (priorCity !=0){
    if (zipLookupDone == "true")
    {
        var currentCity = contactInformationForm.elements[cityField].value;
        if (priorCity != currentCity)
        {
            
            if (!confirm("Should the city be changed from " + priorCity + " to " + currentCity + "?"))
            {
                contactInformationForm.elements[cityField].value = priorCity;
            }
            else
            {
             priorCity = currentCity;
            }
        }
    }
  }
}

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BishorkAuthor Commented:
thanks for your help, that got me on the right track.  i ended up with  the following - which works!
function checkCity(field)
{
        //isAlphaWithSpacesOnly(field);
        var priorCity = contactInformationForm.elements[priorCityField].value;
        var currentCity = contactInformationForm.elements[cityField].value;  
 
    if (isAlphaWithSpacesOnly(field))
    {
     if (priorCity != 0) 
     {
      if (zipLookupDone == "true")
      {
  
        if (priorCity != currentCity)
        {
            if (!confirm("Should the CITY be changed from " + priorCity + " to " + currentCity + "?"))
            {
                contactInformationForm.elements[cityField].value = priorCity;
            }
            else
            {
             contactInformationForm.elements[priorCityField].value = currentCity;
            }
        }
      }
    }
     else
     {
     contactInformationForm.elements[priorCityField].value = currentCity;
     }
   }
   else
   {
   return false;
   }   
}

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BishorkAuthor Commented:
thanks, that got me on the right track.  i ended up w/ the following, which works.

function checkCity(field)
{
        //isAlphaWithSpacesOnly(field);
        var priorCity = contactInformationForm.elements[priorCityField].value;
        var currentCity = contactInformationForm.elements[cityField].value;  

    if (isAlphaWithSpacesOnly(field))
    {
     if (priorCity != 0)
     {
      if (zipLookupDone == "true")
      {
 
        if (priorCity != currentCity)
        {
            if (!confirm("Should the CITY be changed from " + priorCity + " to " + currentCity + "?"))
            {
                contactInformationForm.elements[cityField].value = priorCity;
            }
            else
            {
             contactInformationForm.elements[priorCityField].value = currentCity;
            }
        }
      }
    }
     else
     {
     contactInformationForm.elements[priorCityField].value = currentCity;
     }
   }
   else
   {
   return false;
   }  
}
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