Question

I have some conditional variables in the following code. For example, if the var shipping == “true”, then shippingAddress1, shippingAddress2, etc exist. But, if shipping == “false”, these variables are undefined, and left blank. My problem is that when I try to post, I get a js error because some of the vars are undefined. Is there any way send these through blank?

$.post( 'reserveAPickupAppointmentCreatePickup.php', {
    'location': appointmentLocation,
    'appointmentAddress1': appointmentAddress1,
    'appointmentAddress2': appointmentAddress2,
    'serviceType': serviceType,
    'shipping': shipping,
    'shippingAddress1': shippingAddress1,
    'shippingAddress2': shippingAddress2,
    'shippingCity': shippingCity,
    'shippingState': shippingState,
    'shippingZip': shippingZip,
    'startTime': startTime,
    'endTime': endTime,
    'date': date,
    'estimatedSize': appointmentSize,
    'highValueItems': highValueItems,
    'insuredItems': insuredItems,
    'tools': tools,
    'presentAtAppointment': presentAtAppointment,
    'contactName': contactName,
    'contactPhone': contactPhone,
    'contactEmail': contactEmail,
    'itemList': itemList,
    'studentPhone': studentPhone
},

Answer 1

Set reasonable defaults for the variables you’re using. If it’s a string, default it to an empty string. In general don’t use variables if they haven’t been defined at some point.